A boy is initially overjoyed at the news of him having an older sister, due to his father remarrying to a woman who has a daughter. That is, until he finds out that his new sister is actually his school's strict PE teacher, Shina. With his father going off to live with his new wife, the boy will live with alone with his new sister. In their new life together, the boy finds out that Shina at home is completely different from Shina at work: clumsy, scared of insects, and kind.
That Demonic Teacher Will Be My Sister? has finished publishing and it has 23 Chapters. It is also Known as: あの鬼教師が僕の姉になるんですか, ¿Esa profesora demoníaca es mi hermana?, Ano oni kyoushi ga boku no ane ni narundesuka?, Guru Killer Itu Akan Menjadi Kakak Perempuanku?, Is that demon teacher my sister?
Genres: Comedy , Ecchi , Romance , School Life , Shounen , Slice of Life , Female Teacher , Drama , Family , Japan
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Top 5 Manga Like That Demonic Teacher Will Be My Sister? (Ano Oni Kyōshi ga Boku no Ane ni Narundesuka) [2026 List]
5. Siscon Ani to Brocon Imouto ga Shoujiki ni Nattara
Even in high school, Ritsu and Uta really get along. Suddenly, they have to pretend to be lovers!? The real brother-sister exciting love comedy starts!!
Siscon Ani to Brocon Imouto ga Shoujiki ni Nattara has finished publishing and it has 48 Chapters. It is also Known as: シスコン兄とブラコン妹が正直になったら, When a Siscon Brother and Brocon Sister Become Honest, When a Sister Complex Brother and a Brother Complex Sister Become Honest
4. Fechippuru: Bokura no Junsui na Koi
I love long hair! Tatsu Yunoki, our MC who deeply loves beautiful long female hair, heard a voice scream his name. It was Kotoka Hatsushima, and, under the impulse of alcohol, both he and she decided to date each other. All they know is that they love each other's hair and back?! It’s not necessary to know anything else! They clash fetish against fetish and come together in a fun and romantic comedy. What is your fetish?
(Source. MU)
What I Love About You has finished publishing and it has 147 Chapters. It is also Known as: フェチップル～僕らの純粋な恋～, Fechippuru: Our Innocent Love, Fetiple
3. Kanojo mo Kanojo
Mukai Naoya has loved Saki Saki since grade school, and when she finally accepts his feelings, he's at his happiest. But one day, a cute girl named Minase Nagisa confesses to him! Not wishing to choose only one over another, Naoya chooses to go out with both of them!! What will be of this love triangle that challenges morality itself?
Girlfriend, Girlfriend has finished publishing and it has 144 Chapters. It is also Known as: カノジョも彼女, Girlfriend and Girlfriend, Her, and Also Her, Two-Timing Fair and Square
2. Ashita no Joe
Joe Yabuki is a troubled young man who runs away from an orphanage. Wandering through the Tokyo slums, he meets former boxing trainer Danpei. Joe is later arrested and goes to a temporary jail where he fights Nishi, his future best friend and leader of a group of hooligans. He and Nishi then go to a juvenile prison miles away from Tokyo. There Joe meets Rikiishi, a former boxing prodigy, and a rivalry develops between them. They face each other in a match in which Rikiishi dominates Joe until the latter hits him with a cross-counter, resulting in both being knocked out. This inspires the other prison inmates to take up boxing. Joe and Rikiishi vow to fight again.
Ashita no Joe has finished publishing and it has 171 Chapters. It is also Known as: あしたのジョー, Rocky Joe, Tomorrow's Joe
1. Hige wo Soru. Soshite Joshikousei wo Hirou.
Yoshida is just your average salaryman, drowning his tears in booze. On his way home one night, he finds a runaway high school girl sitting on the street. She offers to sleep with him in exchange for a place to stay―and Yoshida lets her off the hook and offers her work instead. A rom-com between the most unbalanced couple you'll ever find!
Note: Includes 1 extra chapter.
Higehiro: After Being Rejected, I Shaved and Took In a High School Runaway has finished publishing and it has 67 Chapters. It is also Known as: ひげを剃る。そして女子高生を拾う。, I Shaved. Then I Brought a High School Girl Home., โกนหนวดไปทำงาน แล้วกลับบ้านมาพบเธอ, Higehiro. Me rechazaron. Me afeité. Una chica más joven se vino a casa conmigo., 刮掉鬍子的我與撿到的女高中生
