Umi-chans Friends

Little story about Umi-chan and her hairy friends. Included in the Katteni Kaizo Offical Fanbook.

The misadventures of a high school hockey club featuring a student who has returned to Japan after playing hockey in Canada.

The story follows the crazy misadventures of Kaizo Katsu, a former child prodigy turned weirdo after his female childhood friend, Umi, kicked him off a jungle gym in the playground, and he got a huge bump in the head. With this set up, Kaizo (believes he is a cyborg) and his classmates, Umi (will go revealing her dark side with every chapter), Suzu, and Chitan (an inferior being?), will treat in every chapter a different topic of life with the hilarious and interesting way of thinking of the author Kumeta. The attacks of different geniuses/weirdos will create a lot of funny situations.

The locked-room murder case that all other detectives have given up on!

A series in *Young Magazine* and *Young Magazine the 3rd* where authors create the 100th chapter of a series… without creating Chapters 1–99 first! 1. *Offside Trap* by Kumeta Kouji ([Young Magazine 2015 No. 6](https://magazine.yanmaga.jp/ym/2015/2015-6.html)) Ashida Isami is the star player of the Kota High Soccer Club, and childhood friends with its manager, Kaneda Chiyo. Just as his teammates go missing, his mysterious rival recovers from an injury… 2. *Look Forward To When You Eat It!* by Ooima Yoshitoki ([Young Magazine the 3rd 2015 No. 2](https://magazine.yanmaga.jp/ym3/2015/2015-2.html)) (Raw: [Comic DAYS Blog](https://comic-days.com/blog/entry/2018/01/11/110000)) 3. *Bravery Saga* by Yoshimoto Masume ([Young Magazine the 3rd 2015 No. 3](https://magazine.yanmaga.jp/ym3/2015/2015-3.html)) (Raws: [Comic DAYS Blog](https://comic-days.com/blog/entry/2018/01/15/110000), [Comic DAYS](https://comic-days.com/episode/10834108156652934194)) 4. *BattleSexer SEISHIROU* by Kubo Yasuhisa ([Young Magazine the 3rd 2015 No. 4](https://magazine.yanmaga.jp/ym3/2015/2015-4.html)) (Raw: [Comic DAYS Blog](https://comic-days.com/blog/entry/3rd100/seishiro)) It's the 23rd century, an age of science and technology, and sex is no longer required to reproduce. However, humanity has not forgotten sex! Sex has evolved to become a form of martial arts, and those who practice it are known throughout the world as BattleSexers! 5. *New Oni Legend - Any Crying Children Here‽* by Oshikiri Rensuke ([Young Magazine the 3rd 2015 No. 5](https://magazine.yanmaga.jp/ym3/2015/2015-5.html)) (Raw: [Comic DAYS Blog](https://comic-days.com/blog/entry/2018/01/30/110000)) 6. *Simple Z ~The Perfect Detective Kanta's First And Last Case~* by Suzuki Nakaba ([Young Magazine the 3rd 2015 No. 6](https://magazine.yanmaga.jp/ym3/2015/2015-6.html)) (Raw: [Comic DAYS Blog](https://comic-days.com/blog/entry/2018/01/18/110000)) 7. *Mosaic!!* by Umeda Abi ([Young Magazine the 3rd 2015 No. 6](https://magazine.yanmaga.jp/ym3/2015/2015-6.html)) (Raw: [Comic DAYS Blog](https://comic-days.com/blog/entry/2018/01/22/110000)) 8. *Wish For Sasa ★* by Yamamoto Souichirou ([Young Magazine the 3rd 2015 No. 7](https://magazine.yanmaga.jp/ym3/2015/2015-7.html)) - **Included in [Love Letter -Yamamoto Souichirou Short Story Collection-](https://mangadex.org/title/75de5e90-9621-4c0f-899f-056a90ef0061)** 9. *BOWWOW Providence ―An Alternative View Of The Eight Dog Chronicles―* by Segawa Masaki ([Young Magazine the 3rd 2015 No. 8](https://magazine.yanmaga.jp/ym3/2015/2015-8.html)) (Raw: [Comic DAYS Blog](https://comic-days.com/blog/entry/2018/02/01/110000)) 10. *The Very Delish Restaurant Kirishima!!* by Seo Kouji ([Young Magazine the 3rd 2015 No. 9](https://magazine.yanmaga.jp/ym3/2015/2015-9.html)) (Raws: [Comic DAYS Blog](https://comic-days.com/blog/entry/2018/01/08/110000), [Twitter](https://x.com/seokouji/status/1176861725779316736)) 11. *Sacrificial Shrine Maiden Touya* by Yoshimura Kana ([Young Magazine the 3rd 2015 No. 12](https://magazine.yanmaga.jp/ym3/2015/2015-12.html)) (Raws: [Comic DAYS Blog](https://comic-days.com/blog/entry/2018/01/25/110000), [Comic DAYS](https://comic-days.com/episode/10834108156637582736))

Yakushamaru Hiroko has big plans for herself, and she's come to Studio Pulp, the home of the stars, to make them a reality. However, there seems to be some kind of misunderstanding… Many familiar faces return in this comedy that never had a fourth wall to break in the first place. Welcome to Studio Pulp!

A young man moves from his hometown to Tokyo to attend university there and looks for cheap accommodation. He does indeed find something, but what is the non-monetary price for this?

The tale of a boy who falls in love "at no sight." It seems that everyone has met her BUT him.

"This manga is about cute girls and what they do to entertain themselves. A manga that doesn't focus on frustrating topics or similar things." Story telling girls and what they do to entertain themselves, a story by Kumeta Koji (Katteni Kaizo and Sayonara Zetsubou Sensei) and drawn by Yasu (Toradora)

An unknown, tall-hatted noble. A lovely and beautiful high-class lady. A competitive and energetic high school girl. These three mismatched people each aim for one place, each with different reasons. Who is the man who waits for them there? Koji Kumeta writes a new world filled with glee and wonder!