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Sekaiichi Hatsukoi  
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Onodera Ritsu quits his job and transfers to the publishing company Marukawa Shoten. Sadly, he gets assigned to the editing department that handles shoujo manga; and Ritsu, who vowed to never fall in love again, working on love stories is impossible. Panic ensues when he realises that the arrogant and tyrannical head editor turns out to be his former first love!

Includes Onodera's co-worker Kisa Shouta's storyline of his encounter with handsome student and book store clerk Yukina Kou.


Related Series

Associated Names
世界一初恋 ~小野寺律の場合~
Mejor Primer Amor del Mundo - El Caso de Onodera Ritsu (Spanish)
Melhor Primeiro Amor do Mundo - O Caso de Onodera Ritsu (Portuguese)
Sekai Ichi Hatsukoi - Onodera Ritsu no Baai
Sekai-ichi Hatsukoi
Sekai-ichi Hatsukoi - Yukina Kou no Baai
Sekaiichi Hatsukoi - Kisa Shouta no Baai
Sekaiichi Hatsukoi - Le cas de Ritsu Onodera
Sekaiichi Hatsukoi - Onodera Ritsu no Baai
Sekaiichi Hatsukoi Przypadek Ritsu Onodery
The World's Greatest First Love: The Case of Ritsu Onodera

Groups Scanlating
Dangerous Pleasure
It's Daletos!
Ninja Scanlations
September Scanlations

Latest Release(s)

Status in Country of Origin
11 Volumes (Ongoing)

Completely Scanlated?

Anime Start/End Chapter
Starts at Vol 1, Chap 1 [S1]; Vol 3, Chap 5 [S2]
Ends at Vol 2, Chap 4 [S1]; Vol 6 Chap 10 [S2]

User Reviews

2 topics, 10 posts
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User Rating
Average: 8.8 / 10.0 (732 votes)
Bayesian Average: 8.7 / 10.0
 52% (380 votes)
 19% (136 votes)
 13% (96 votes)
 7% (48 votes)
 4% (28 votes)
 1% (7 votes)
 0% (3 votes)
 0% (2 votes)
 1% (4 votes)
 4% (28 votes)

Last Updated
July 31st 2016, 1:26pm PST



Category Recommendations





Original Publisher

Serialized In (magazine)
Asuka Ciel (Kadokawa Shoten)
Emerald (Kadokawa Shoten)

Licensed (in English)

English Publisher
SuBLime (4 Volume - Ongoing; Print)

Activity Stats (vs. other series)
Weekly Pos #425 increased(+33)
Monthly Pos #399 decreased(-37)
3 Month Pos #377 decreased(-42)
6 Month Pos #309 decreased(-42)

List Stats
On 2753 reading lists
On 460 wish lists
On 92 unfinished lists
On 532 custom lists

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Forum Posts
Second Season green-lit 1854 days, 4 hours, 15 minutes ago
Sekai-ichi Hatsukoi Manga Has TV Anime in the Works 1951 days, 21 hours, 6 minutes ago

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User Comments [ Order by usefulness ]

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Rating: 10.0 / 10.0
by renxtsuruga
September 23rd, 2012, 2:21pm
MHMM<3 BEST YAOI MANGA EVER(: It captured my attention from the beginning and the artwork is pure amazing. I just love the personalities of the characters. RitsuxTakano <3
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one of my fav manga/anime except   
Rating: 10.0 / 10.0
by Narufan1st
August 27th, 2012, 5:49am
chiaki should be with yuu hatori is waaay too boring for him and chiaki and yuuu together are my OTP
my favourite couple though is kisaxyukina so cute<3
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I love her work   
Rating: N/A
by missery
June 11th, 2012, 12:29am
I love her art and I love her characters! I'm a sucker for first loves so this one really got to me. Every chapter I read I get more and more hooked. I love how ritsu acts so cute. This is definitely one of my favourites, I keep reading and watching it over and over ^^
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If it wasn't for him..   
Rating: 7.0 / 10.0
by EnjoyRomy
May 28th, 2012, 10:16am
What I like:
Takano, Kisa and Yukina. More or less they are frank, mature/adult, and sincere characters. I also like the misunderstandings and unsaid things and how pretty realistic they are, at least to me. My favorite couple is Kisa+Yukina, though I had high expectations for Takano+Onodera at the beginning. But then..

What I dislike:
Grown-up Onodera! I absolutely can't stand him! If it wasn't for Takano I would've stopped reading this already and I can't help but hope that he'd get tired of that kid and his immaturity and foolishness. Uff! Okay.. Also I'm not enthusiastic about how there seems to be only homosexual or straightbutinlovewithaman male characters in the same environment either.

... Last updated on May 28th, 2012, 10:20am
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Dont like the other couples   
Rating: 9.0 / 10.0
by poisonousrose1517
March 19th, 2012, 10:12pm
I love the story of Onodera & Takano, but the other two stories is... Blah...

I mean the Kisa and Yukina story is an alright story, they have their moments and there's the insecurity that makes it a little interesting but i'm not really feeling it too much, but i will say that Yukina is definitley the best looking in the series and i think that it has potential to be better...

And as for Hatori and whatshisname, i dont like the story at all so far, like you know its not good when you cant even remember the uke's name, this story also has its moments but its by far the worst story, and i have no hope for it...

I say keep the main couple of course, keep Kisa/Yukina, get rid of Hatori/Whatshisname and add Yokozawa/Kirishima... If you havent read the Yokozawa/Kirishima novel you definitely should, its really good!
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one word for sekaiichi hatsukoi: LOVE!!!!!!!   
Rating: 10.0 / 10.0
by yoykumi
January 13th, 2012, 7:44am
i really really enjoy this manga!!! i can't w8 for the upcoming volume,its so great,i can't stand a minute without think of it! before this,i'm kinda not yaoi fans,but after read sekaiichi and junjou romantica,then i became fanatic! sekaiichi & junjou romantica always have one incomment, they are all true love! love forever! happy endings! ahh! i enjoyed how can impossible love become possible wink
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Sekaiichi Hatsukoi   
Rating: N/A
by aiuso
December 28th, 2011, 5:32am
I read this series after I had seen it practically everywhere, and I will admit, Nakamura Shungiku's other popular series, Junjou Romantica, was my first.
This series is almost as good as Junjou, some even say better, but since Junjou Romantica was my first yaoi series, I can't say if one is better than the other. All I know is that I LOVE Sekaiichi Hatsukoi as a whole.
The main pairing, Takano and Onodera, are absolutely adorable. I love the concept of this pairing, as it's something rather unique that I hadn't encountered in a manga before. There relationship is just so amusing, and sometimes even complicated, and you feel warm and tingly just reading and watching their relationship grow with each chapter.
The other pairing, Hatori and Chiaki, are also equally adorable; but well, all the couples in this series are adorable.
I was intrigued by Hatori's character when he was first introduced, since he seemed rather quiet and mysterious. I suppose he is rather quiet and mysterious, but Chiaki, brings out a different light in him. His love for Chiaki, his childhood friend, is so sweet and pure, and the two balance each other out nicely, in my opinion.
The next pairing, Yukina and Kisa, was a bit awkward at first, but it was nice to see Kisa gradually open up to Yukina and give himself to him.

I would definitely give Sekaiichi Hatsukoi a chance if you haven't already, because it is just a wonderful series that you cannot pass up.

... Last updated on December 28th, 2011, 5:33am
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Rating: 10.0 / 10.0
by DeDe4ever
November 10th, 2011, 6:06pm
So first, this manga to me is awesome. The charaters and the art are all 10 for me. Even though I just wanted to focus just on Takano x Ritsu, sensei pulled me into the other realtionships also. I dont like reading a manga again because I know everything that happened already and its just weird but I
I've read this one alone like 3 times (bored) but still I was excited because Ritsu isnt your average shhy uke and Takano isnt your average demanding seme. their a funny couple RECCOMENDED >___< READ IT

... Last updated on October 30th, 2012, 2:10pm
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Rating: N/A
by cookieslov3
August 20th, 2011, 2:26pm
I tried this manga because I was interested in what the fuss was all about with the Junjou series and I just couldn't force myself to read Junjou Romantica - there has been many attempts, but the art just throws me off so bad and the characters are not even likable....
but back to the main topic, it does have an interesting plot - I do have a small soft spot for stories based on the manga publishing industry (if done well)... the characters are alright, though they do fall right into the cliche slots, but at least it's not a 'fall in love, confession, sex' story, the pace is quite good and onodera's struggles with his feelings are understandable so overall, it's a fine read... though I don't find myself wanting to re-visit it in the future.
The other couple is just simply not memorable...because to be honest, I don't even remember what their story was about
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Rating: 8.5 / 10.0
by aislin
August 13th, 2011, 3:30pm
I really like this series.

I haven't read Junjou Romantica so I don't know how to compare it to the original series but I really like Ritsu. I like that he's ornery and stubborn and I like that he lives a portion of his life in denial. The reason I like those aspects is because in some ways it seems more realistic to me. Too often in yaoi series, it seems like people have tons of drama over simple misunderstandings. In this case, yeah, there was some misunderstanding in the past but I actually don't personally believe that the misunderstandings are that out of control in the current part of the series. The things that Ritsu believes (whether or not they're true) make sense to me based on what he knows, and I like that he blocked a lot of things out of his past. It fits his personality because he does similar things in the present as well.

Spoiler (mouse over to view)
There are some things that I see in yaoi series that I get a little "*sigh* alright" about-- like how Takano basically keeps forcing himself on Ritsu. And the number of times they can go from sitting around nowhere near touching to all of a sudden being naked and having sex. One of the scenes that stood out the most to me with logistics is a car scene where all of a sudden Ritsu's on the receiving end of a whole lot of Takano love. I find it slightly hard to believe that they never have problems with anything and Ritsu is never uncomfortable since it seems like every time lube and (of course, since it's yaoi) condoms are nowhere to be seen.

But the thing that I like about this series is that if you keep reading, there are things that make sense. Ritsu is getting manipulated by Takano in some ways and that's not really the epitome of a healthy relationship. But at least Takano has reasons for not letting Ritsu get away. Ritsu ran away for a decade once and Takano doesn't want that to happen again. It doesn't really excuse any dominant behavior but it at least puts it in the context of his life. And since Ritsu's personality is such that I think he actually doesn't mind the dominating, it doesn't bother me the way it exasperates me in some series.

I know I just spent a lot of time mentioning things that aren't my favorite part of the series so it may seem odd for me to say I really like it. But I do. Ritsu makes me laugh. I find most of the characters to be endearing. I like that more and more information is getting out about the main two characters' pasts. I think I also like that this series is a little bit different-- that at least the uke isn't super girly and falling all over himself to get in the pants of the domineering seme. I like that Ritsu questions what the hell he's doing even as he's doing things he can't stop himself from doing. I like that Ritsu didn't want to believe he was in love for a long time. I like the little notations which amuse me, such as, "296 days until Ritsu falls in love." It makes me curious about what will happen to finally tip the scales-- what that final moment will be when he falls completely in love.

And I like that they have problems and miscommunication but a lot of it seems very reasonable to me. Yokozawa spends all this time filling Ritsu's mind with warnings and threats that it's reasonable to me for Ritsu to be hesitant and questioning and to an extent jealous. It's reasonable to me that he doesn't fully believe Takano when Takano says anything about it because he still doesn't know whether to believe whether Takano was just screwing with him when they were younger. It's reasonable to me that Takano reacted so poorly to finding out that Ritsu had some other stuff going on when they were going out before (I'm being vague to avoid more concrete spoilers), because once you find out more about him you learn that he had a tough life and he was kind of an angry kid and he didn't believe in people who were kind without wanting anything in return. If he thinks the one person who acted that way to him, who he came to love and who abruptly disappeared on him, and who later turned out to have potentially been two-timing him all along-- it makes sense to me if he had a bit of a breakdown when you add that to the other stress going on with him.

Also, this series has made me burst out laughing suddenly a few times, like when Takano finds out Ritsu's last name was never Oda XD That scene was great.

So in conclusion, it's not the absolute omg best ever yaoi series I've ever read. It does have a few tropes in it (which is why I gave it an 8 1/2). But I think they're outweighed by the characters and the interesting dynamics and the things that are done a little differently than your every day BL. I like that the series makes me laugh. I like that the characters are a little messed up but they realize they are and that there's a fair amount of character development. I like that the misunderstandings seem to have at least some amount of realistic basis. I like the dual story lines of the way Takano and Ritsu are at work and outside of work. I like that Ritsu is so determined to be seen as his own person. I like a lot of things about this series and keep coming back to it every few months to see if there are any updated chapters.

I would recommend people read this if they're curious.

... Last updated on August 13th, 2011, 3:37pm
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