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Kagakushitsu e Douzo  
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Volume 1
1-2) Welcome to the Chemistry Lab
Shibaura, the Chemistry teacher, usually seems gentle and kind but what is he really like in reality? Will Kousuke be safe in the Chemistry Club?

3) Only You Would Steal me Away
Kobayashi is always appearing out of nowhere and clinging onto Kousuke's brother. What is his purpose? Is it just to help Kousuke and Shibaura, or is there more to it?

4) The King's Lens
Takeru has fallen in love with the photograph that Sumito has taken, but is strangely avoiding the photographer like the plague.

5) A Grave Sin
Ryuuya's father has just passed away, and now he is forced to live with his uncle, who also happened to be his father's lover.

6) I'm in Love With a Demon
Everyone has always avoided Zenta because they thought he was creepy and geeky, except the cutesy Hibino Rei.

6.1) Omake
Some short stories on the main story.

Volume 2
1) The Illegitimate Couple
It's been 6 months, and Shuri is wondering if Kobayashi is really his lover. Kobayashi's memory is continuing to improve, and he remembers something about Shibaura Sensei and the pharmaceutical company he worked at, but he can't remember what. Is it good? Is it bad? Will it affect the relationship between Shibaura Sensei and Kousuke? Will Shuri and Kobayashi move their relationship past kissing?

2-3) Welcome to the Chemistry Lab
Shibaura promised to call Kousuke during the holidays so they can meet up but he never did... The new school term started and Kousuke found out that he not only failed in his promise, Shibaura has completely disappeared without leaving any signs.

4) No Place to Return
Sakuchi's father works in a large company that requires him to constantly be on the move. Sakuchi struggles with the anticipation and goodbyes of fleeting friendships that he is always faced with. He has finally become close with Kobayashi and Kousuke, but it is time to say their farewells.

5) Last Letter
Ryoya has finally returned to the house he has spent the last 20 years avoiding.

6) Rigorism
Shuri is finally in university and now lives in the dorms. Kobayashi is unsure how he should proceed with their relationship without giving Shuri any trouble.

7) Omake

Volume 3
1) Road of Love
Shuri is finally starting to see that Kobayashi isn't really a cold person but rather, an awkward person. Kobayashi keeps things from Shuri simply just because he doesn't want him to worry too much.

2) Knockout
Dr. Kajiwara has been proposed to by his patient Mutsuhi but he is hesitating because he can't quite put Dr. Shibaura his high school crush completely out of his mind yet.

3) The Night Will Finally End
Kousuke has finally gotten into his dream company, Yuazu Pharmaceuticals. Willl he finally be able to find Shibaura?

4) Road of Fate
Miki is in love with Kousuke but she can't confess her love for him because she can feel that he already has someone else that he loves.

5-6) I Love You Too Much
Story that was also published in chapter 1 and 2 of Ikura Nandemo Suki Sugiru .

7) Character Profile

8) Omake


Related Series

Associated Names
Chemistry Lab
Kagakushitsu e Douzo Mirai ban
Kagakushitsu he Douzo
Sexperimente (German)
Welcome to the Chemistry Lab
Zoku Kagakushitsu e Douzo

Groups Scanlating

Latest Release(s)
v.3 c.3-4+omake by Attractive Fascinante over 10 years ago
v.3 c.1-2 by Attractive Fascinante over 10 years ago
v.2 c.5-6 by Attractive Fascinante over 10 years ago
Search for all releases of this series

Status in Country of Origin
3 Volumes (Complete)

Completely Scanlated?

Anime Start/End Chapter

User Reviews


User Rating
Average: 7.5 / 10.0 (261 votes)
Bayesian Average: 7.4 / 10.0
 18% (47 votes)
 18% (48 votes)
 20% (53 votes)
 17% (44 votes)
 10% (25 votes)
 7% (18 votes)
 5% (12 votes)
 2% (4 votes)
 3% (8 votes)
 1% (2 votes)

Last Updated
January 11th 2016, 4:17pm PST



Category Recommendations





Original Publisher
Biblos (2003)
Libre Shuppan (2006)

Serialized In (magazine)

Licensed (in English)

English Publisher

Activity Stats (vs. other series)
Weekly Pos #552 increased(+219)
Monthly Pos #1154 increased(+490)
3 Month Pos #2183 decreased(-8)
6 Month Pos #2741 increased(+116)
Year Pos #3021 increased(+254)

List Stats
On 225 reading lists
On 174 wish lists
On 1076 completed lists
On 26 unfinished lists
On 256 custom lists

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Forum Posts
Ending line? over 10 years ago

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User Comments [ Order by time added ]

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Main story SUCKS   
Rating: N/A
by sunnyme
July 4th, 2010, 4:38am
It's so hard for me to rate this manga because I *love* the secondary couple so much yet hate the main couple equally. Shiba actually made my skin crawl after a while. He says it's his way to love but it's really manipulation. Plenty of yaoi have a manipulating seme, which I'm not a fan of in general. But at least there the manipulation is coupled with love. Shiba's is a detatched type of manipulation which was sickening to see.

If it weren't for Shuri- Kobayashi, I wouldn't ever have finished Vol 2. Their story is filled with so much sweetness, I'd almost recommend this manga. Almost.

... Last updated on July 4th, 2010, 4:40am
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Sick relationship!   
Rating: 4.0 / 10.0
by robertW2471
May 22nd, 2011, 10:55am
Sorry about my insufficient english.

They have such a sick relationship with each other I almost couldn't continue to read it!
Shiba is a psychopath and Kousuke has the typical traits of a psychopaths victim!

Kousuke is as sick as Shiba. He has the plan to get him back through following him in his field of work.
Love is beautiful, I know that, but to be in love with a person you didn't see in years and who did unnecessarily hurt you , is just utter bullshit! His obsession is a sickness. The memory of someone you love fades with time, and so does the love itself. You move on, that's the way of life. Everybody knows that from personal experience.

Shiba does nothing for Kousuke. He gave in to the immature love of a high school student, even drugged Kousuke to make him docile to his own hardcore sex wishes and sex-slave training program . He doesn't respect Kousuke as a person. He destroys an labile person's live for his own selfish and also immature reasons. He even referred to him as a victim.

The scene where I extremely felt shibaura's psychopathic character was when he didn't accept his friend's love confession under the reason that his friend is to self-centered and wouldn't give himself up for him. In addition, he seems to be horrified as he sees his Doctor friend sleeping with his patient but doesn't seem to realize his own sick relationship with his former student. Hypocrisy is also a psychopathic trait

This story could have been awesome if Honjou Rie would have layed more effort in the psychology of Psychopath and victim but she wandered off the subject and concentrated herself more on Kousuke's brother's love-life and unconnected one-shots. I get the feeling that she lost interest in the main couple or didn't know how to continue and tried too lighten up this dark story with lovey dovey side-plots.

I thought Kousuke's brother would be more protective of him but he looses interest when he get's his own boyfriend and just accepts the relationship between his brother and his teacher. He even has the inkling that shibaura is a dangerous person but does nothing at all to stop it. He could have gone to the principal, police or their parents. Kousuke would have been devastated but he would have had the chance to live a normal life or to rediscover a mature love to shibaura, while not forgetting his own value as a self-dependent person.

I just read the story till the end to see a big showdown and confrontation but my effort was useless.
I thought that Shibaura's childhood would also play a role in the story, and I didn't expect a happy-end at all.

But Rie-sensei rushed to a questionable happy end without closure at all.
I know that it is just a story but if you are writing about a dark theme in a shallow way, it always fails to capture the more mature readers.

This story calls for a continuation in a more serious way!

Edit: comment to jelaaay

There is a big difference between love and to be a slave to somebody.

And there is a limit to define love as well. If you give yourself up completely to a persons will but the other person does nothing for you, then the fine line between love and sick obsession is exceeded.

So nobody was worth to be the loved one of Shibaura but the masochistic Kousuke who was psychological corrupted as a teenager?!
Who would fall in Love ( I mean real love not just lust and curiosity) with a person who gives nothing back to you but uses you and hurts you out of self-satisfaction?
I tell you who. Just a labile, weak and masochistic individual. And we know from history that a relationship like that destroys the person who is the victim. In this case Kousuke.

... Last updated on May 22nd, 2011, 11:42am
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I disagree. I like the main couple.   
Rating: 7.0 / 10.0
by jellaaay
January 7th, 2011, 12:13am
Though I completely understand why others would strongly dislike them..compared to Shuri and Kobayashi, of course. So what if the main couple's story was more on the dark side? It made it more interesting that there were such opposites. Shuri and Kobayashi were a couple where Shuri was Kobayashi's guide to "light". On the other hand (oh gosh this will sound corny) Sensei was Kousuke's guide to "darkness" (-_-). But that doesnt make the latter's love for each other any less. I mean sure, Sensei's way of loving was twisted.
Spoiler (highlight to view)
And yes, his virus plan is evil bla bla.
But I seriously believe that his love for Kousuke was genuine. There's no "limit" as to how to define love. Everyone has their own perspective of it. Note that in one of the stories, Sensei described his ideal lover to be someone
Spoiler (highlight to view)
with a pure mind who would chase him anywhere..but believed that such person didn't exist. Then he meets Kousuke and voila, Kousuke's the only one he shows his gentle (possibly fake) side to. But fake or not, compared to others you could clearly see he treats Kousuke differently.
I personally love their relationship. I like couples that have their own world where only they can understand each other.
Spoiler (highlight to view)
So towards the end, I think the involvement of that extra girl was unecessary. How sad, really. Him not wearing his glasses all the time and saying "he doesnt need to see anything else" completely implies that he doesnt care about anything other than Sensei. I'm glad I got to see a grown up Kousuke. In the end they were still together forever so I've got no complaints. Sure, I wish things could've been explained a whole lot better. Plus, given that a lot of other readers believed that Sensei was purely evil and didnt love Kousuke at all, I wish the mangaka gave us a chapter coming from Sensei's point of view.
Overall, they were the main couple, the story revolved around them, it kept me interested in the end so I'm partly satisfied.

Now about Kobayashi and Shuri, I get why others like their story. It was simple and less frustrating to read. But you gotta admit, it was kinda short. And it felt like their story just kept popping out of nowhere. I think it would have been wiser if their story was a sequel. Meaning, a whole manga solely focused on them. Involving them with the main couple just made the plot look like it was all over the place.
Spoiler (highlight to view)
Also, about Kobayashi's illness, it was a bit misleading. At first he kept hinting that he knew something drastic about Sensei but in the end it wasn't much.
Anyway, putting that aside. Kobayashi x Shuri story was just any typical yaoi story you often encounter. Regardless, they were still cute so thumbs up I guess.

The other stories were, *sigh* unecessary? (some) unrelated? (mostly) Could've been put in the very end. It felt like the mangaka had so many ideas for plots that she just had to put them all together...The King's Lens was sweet but typical. A Grave's Sin was too much..the misunderstanding was unrealistic.
Spoiler (highlight to view)
Growing up, the seme should've realized that the person he calls "mom" is his uncle. I mean, duh. Doesn't matter if his real mom and "mom" are siblings, thus looking alike. You can clearly distinguish the difference between a male and a female as you grow older. Also, wasn't his treatment to his uncle WAY too harsh?
I'm in love with a demon , now that one was cute. A little cliche, but I still enjoyed it. The uke was adorable. No place to return , this one is what I refered to as "unecessary". He was another extra character we couldn't care less about.

I can't remember the other side stories. Oh, about Last Letter , gosh.. que horror! that was an unexpected addition. I disliked it the most. I was interested in the beginning but then finding out that the uke died..I was so unprepared. I mean, I don't see tragedy anywhere in the genre.. you might as well know. So if you're not into tragedy dont read Last Letter



I'm giving both the main couple and the 2nd couple a 7. I'm not including the art cause we all know the art's fabulous..especially if you've read her other works.

... Last updated on January 7th, 2011, 12:22am
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Main couple sucked!!   
Rating: N/A
by tomomimorgan
June 27th, 2009, 12:05pm
Guess I'm just gonna go with the trend, here.

I really didn't like the main story. I usually like mean/evil characters, but I didn't like Shiba-chan in the least. And up till the end of the story, I felt like I couldn't really grasp his character and pretty much what went on in his head - was he even really in love with Kousuke? And even Kousuke was a bit too passive.

But Shuri and Kobayashi... I LOVED them!! It was different but sweet and serious at the same time... I adored them both!! (Shuri was just too hilarious and sweet... and Kobayashi is just so cool!). And the extra one-shots were really nice and sweet (I especially loved the sad story of Atsushi).

Good manga overall, if it weren't for the annoying main couple.
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Volume One   
Rating: 10.0 / 10.0
by purplestorm016
August 6th, 2008, 12:14pm
I loved the second and fifth stories. They were so cute! I had a smile on my face after reading both of them. Definitely worth your time. Off to volume 2!
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Rating: 8.0 / 10.0
by jeanelle
November 15th, 2013, 8:57am
The only reason I keep reading this is because of Kobayashi and Shuri. Now that's got more depth. The main couple is like cliche. Would have been better to make Kobayashi and Shuri the main couple.

PS: I want MORE OF THEM!!!

... Last updated on November 15th, 2013, 9:15am
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Kobayashi and Shuri :3   
Rating: N/A
by momomilk
March 31st, 2010, 12:00am
lol I'm giving it at 10 BECAUSE of Kobayashi and Shuri. They were my favorite. <33 So cute, love them. And of course, the art, I always love her artworks. Basically, that's the only reason I read this manga. I didn't like the main pair, shiba and kousuke. Their relationship was just too creepy for me. Shiba's just way to sadistic =o=; So I didn't quite enjoy that story.

But, i also enjoyed the one-shot "A Grave Sin". I liked that. one of my favorite one-shots.
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I love Kobayashia and Shuri<3   
Rating: 10.0 / 10.0
by asiancrackerfolife
November 16th, 2009, 7:33pm
My 10 only goes to Kobayashi and Shuri. I wished it was more based on their relationship, then the sadistic teacher and his idiotic pupil. Hopefully the mangaka will make a volume just for them. I can't seem to get enough of them. Even if you give me a low rating my love for them will never die!!!!!

... Last updated on January 13th, 2010, 11:15pm
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mostly great but has a frustrating ending   
Rating: 9.0 / 10.0
by grumble_cakes
December 1st, 2007, 10:29am
This is mostly a great title- great artwork, fluid storytelling and interesting stories that manage to draw different emotions from the reader (one side story made me cry like a little girl). The character of Shuri the protective older brother is truly a joy and I think many people will agree that Kobayashi and him should have been the main focus of this story (though they do already get a fair share of attention).

The ending bothers me, though. Spoilers-
Spoiler (highlight to view)
Shibaura is a messed up guy and it's discontenting to see Kousuke embrace Shibaura's twisted ideas about love so readily. I couldn't help but feel Kousuke is entering an abusive relationship with a cruel man. I normally enjoy cold bastard semes but this is too much :/
This could be a question of personal taste but I did not like that at all. Even with the frustrating ending I still highly recommend this manga!
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Chapter 3   
Rating: 6.0 / 10.0
by Larawolfgirl
June 20th, 2014, 7:21pm
Lots of people are saying that they don't like the main couple. I liked them at first, but then found the twist jolting. Unlike some people thinking it is cliche, or disliking the darker side to it, I just didn't like the fact that Shibaura seemed to suddenly change personalities. However, even from the beginning I liked the other couple better. Oddly enough, my favorite part of this though are the one-shots. Chapter 3 was especially lovely. If only this had ended after chapter 4 I would have rated it 8, but since it continued, spiraling down along the way, I give it a 6.

... Last updated on June 20th, 2014, 7:22pm
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