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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
Лучшая в мире первая любовь
Самое прекрасное в мире - первая любовь
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

Latest Release(s)
v.12 c.Extra by RainbowPeenScanlations 28 days ago
c.Date Extra by RainbowPeenScanlations 28 days ago
c.27 by RainbowPeenScanlations 28 days ago
Search for all releases of this series

Status in Country of Origin
13 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: 8.7 / 10.0 (751 votes)
Bayesian Average: 8.61 / 10.0
 51% (380 votes)
 19% (141 votes)
 13% (101 votes)
 7% (49 votes)
 4% (28 votes)
 1% (8 votes)
 1% (4 votes)
 1% (5 votes)
 1% (4 votes)
 4% (31 votes)

Last Updated
February 14th 2018, 6:55pm PST



Category Recommendations





Original Publisher

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

Licensed (in English)

English Publisher
SuBLime (9 Volume - Ongoing; Print)

Activity Stats (vs. other series)
Weekly Pos #260 increased(+26)
Monthly Pos #391 increased(+90)
3 Month Pos #511 increased(+47)
6 Month Pos #500 decreased(-15)
Year Pos #414 decreased(-152)

List Stats
On 2839 reading lists
On 486 wish lists
On 100 unfinished lists
On 582 custom lists

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Forum Posts
Second Season green-lit over 6 years ago
Sekai-ichi Hatsukoi Manga Has TV Anime in the Works over 6 years ago

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User Comments [ Order by usefulness ]

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Don't get what all the hype is about...   
Rating: 4.0 / 10.0
by streetwalker
April 7th, 2013, 8:38am
Despite the fact that I tried reading Junjou Romantica before and ended up dropping it, I decided to give this a go since these mangas are so popular.

My initial impression was "better than Junjou" when it comes to the story. The art in the beginning of the series is just as god-awful. It's messy, but not because it's cluttered with too much detail or anything, in fact, it's too simplistic. It looks sketchy and not fine tuned at all, at times I felt like I was reading mere storyboards. Gives me a head ache to try and decipher what's going on. The characters are ugly, which kinda hurts the hotness of the yaoi-aspect of the story. To be brutally honest, it's probably the ugliest style out of any manga I've ever bothered to read.

However, the art â thank God â does get better and cleaner in later volumes, and though the design of the character's faces stays the same, the body proportions also become a lot more realistic as the story advances. Some panels are even stylistically quite artsy! I especially liked the rain scene where Ritsu and Takano are standing in the shelter...

When it comes to the story, there is something about it that's got potential. That, I think, is the humour more than anything else. The whole setting for the story is quite light and fun, not all that deep really, but not every story has to be. The only problem is that the plot develops slowly and the cute plot devices, like the count down to when Ritsu will fall in love, become repetitive. The manga industry setting is quite intriguing at least.

As for the characters, Ritsu and Takano aren't very likeable at first and there isn't anything very original about them. Reluctant uke in denial being forced by a forceful near rapist tsundere seme. Seen it, and seen it done much better too, even as these aren't my favorite yaoi tropes... Now, Ritsu had some good qualities, he doesn't come across as completely helpless, he's hardworking and quite strong-willed. Takano improves on closer acquaintance and I felt for him since he did seem rather hurt by Ritsu's rejection and messy love life. Despite being the poster boy of the overbearing tsundere seme, he turned out to be surprisingly caring. The insight we get into his back story and the deep feelings he has for Ritsu was for me the biggest draw of this story.

Kisa and Yukina are fine too, I enjoyed the story and liked the characters. Especially the older uke/eager young seme aspect was nice. I don't really remember the other couples...

There are things I like about this story but there are some serious consent and victim blaming issues even in the later volumes. Rape≠Love!

... Last updated on April 20th, 2014, 7:58am
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The best ♥   
Rating: 10.0 / 10.0
by Mochi__x
October 20th, 2012, 4:49am
I just love this ♥

To be honest I had my doubts at first, I'm not a big fan of Nakamura-sensei's art (I tried reading Junjou Romantica a few times but the art always put me off - though to be honest the characters did too) but Sekaiichi Hatsukoi's plot seemed fairly interesting so I gave it go. And I have to say her art has improved a lot since her older works, it's a lot cleaner and the characters' limbs seem to be more proportional now.

Yes, overall it is quite cliche; most of the ukes have the typical small stature & huge eyes (there's only 1 exception), the semes are possesive & pushy, and there are loads of silly misunderstandings (I'm mainly talking about the incident between Onodera & Takano in their student days - to be honest I think it should've been something a bit more convincing to warrant Onodera's reaction).

Although, that's all part of the reason why I adore this manga so much. I don't see anything wrong with stereotypical BL if it's entertaining, and my gosh this really is.

There's loads of comedy throughout, although it doesn't overshadow the romance at all. There are also some moments that can wrench your heart (the main one consists of Takano & Yokozawa having a certain discussion - I can almost guarantee that if you didn't like Yokozawa from the start, after that scene, you'll absolutely love the poor guy). Then to top it all of, there's also a lot of sex scenes (literally almost every chapter!).

I just adore stories that have multiple relationships (in fact the Warui Koto Shitai series is my second favourite manga of all time -- so if you haven't read that yet, then seriously go check it out: Ahh, Towa & Mikado are just so scrumptious! And there's the hot Shinonome too...) Anyway, I really like being able to read about different couples that are all in the same universe, and I love seeing how events in their relationships overlap. So I think that's one of the major reasons why I enjoy this manga so much.
Plus I like almost all the characters, so obviously that helps. The only ones I don't particularly care for are Yoshino & Hatori. -- Not just because of the non-con in the associated novel, but I just find them boring. Hatori is quite dull & Yoshino is far too stupid to even be considered cute. Though I suppose if you like Misaki from JR then you may like him too.
Apart from them, the other 3 couples are really adorable ^__^
Spoiler (mouse over to view)
I am including Yokozawa & Kirishima too, even though they don't make many appearances in the manga so far, I still think they have a wonderful relationship.

I know some people dislike tsundere characters but I think they're cute, so I especially love Onodera. Yeah he can be frustrating at times since he's so hesitant, but to be fair I don't think it's that easy for someone to dive head-first into a homosexual relationship, especially if it's with your boss/first-love-who-accidentally-broke-your-heart!

I also really like the setting of this too, as it isn't just an office-based romance or high-school themed story. In fact, I think the manga editing aspect of this makes it really interesting. Unlike other manga with a similar setup, this actually focuses a lot on the editing & publishing industries, which makes this pretty special as it goes into so much detail. Plus what I really like is how Nakamura-sensei can make jokes about the industry and when she describes a process (for instance, submitting the storyboard) there are often little snippets along the lines of, "this is how mangaka are meant to behave, but bad mangaka do this instead", and she sort of jokes around like that. (I couldn't be bothered to find an actual quote, so I'm not sure if my example made any sense, but if you read it then you'll probably understand what I'm getting at).

Even though this review is meant to be of the manga itself, I just want to recommend the anime to anyone who hasn't seen it yet, as the seiyuu are all amazing! I'm always a bit skeptical about watching anime after reading the manga, as I tend to imagine what the characters sound like while I'm reading, then when I get around to watching the anime adaptation I usually end up disappointed. But with this, the seiyuu all fit their roles perfectly, and really become the characters. Plus they just have such lovely voices ♥

So while Sekaiichi Hatsukoi doesn't have the most gripping of plots, I still think it's wonderfully entertaining and always leaves me with a warm fuzzy feeling and goofy grin. So if you're like me and just want something with minimum drama (no ridiculously complicated love-dodecahedrons thankfully!!) and lots of smut, then give this a go ^__^

(I also strongly recommend that you read the Yokozawa Takafumi no Baai novels as well -- they are brilliant! Plus the movie adaptation of YTNB has been announced, so that is definitely not to be missed!♥)

... Last updated on October 6th, 2013, 12:40pm
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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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