Completed BL I've already read

Sequel to Karasugaoka Don’t be shy!!

Underage
Tomoki is a troubled student who others steer clear of. Hidaka, on the other hand, is the top student in the school, but his quiet bookishness hasn't made him any friends, either... After the two of them get teleported away from school by accident, Hidaka confesses that he has powers to Tomoki. Why did he tell him his secret? Maybe Hidaka is the only one who knows Tomoki's true nature...

Underage
“I've always dreamed of falling in love at an all-boys school!!”When Hinata finally gets accepted to a boys' school, his dad gets transferred and Hinata's sent to live with a family friend. A bit nervous, he goes to the address, only to find a guy who's just his types at the door! A lovestruck Hinata forgets all his worries in an instant. Excited, Hinata starts fantasizing about all the ways things might go…

Meeting the unrequited love of your 18-year-old self during a class reunion at 27 - that love that has missed its chance to bear fruit... where is it headed to now?

Underage
Riku, a rough-looking high schooler, is a lover of shoujo manga and takes care of his family in place of his late mother. He has a younger brother, who he cares for deeply. One evening, he is suddenly embraced by a man in the park who offers him $300 to spend the night. Riku runs away, but soon learns that the handsome pervert who approached him is actually the guardian of his brother's friend!

Asaichi can't play any instruments, his voice is average, and he's only in the band for the girls and the sex. Plus, he's homophobic. For some reason, the new bassist is infatuated with him despite the treatment Asaichi gives him.

To avoid accepting two confessions from Xia Yiyi and Qiu Mang, Tang Tang told them he was gay. Due to the two girls' unwillingness to back down, they told Tang Tang that he must show them evidence. To cover up his lies, Tang Tang decided to seek help from his friend Chen Qingye so they could put on an act to help Tang Tang get away from the confessions. Though constantly showing restraint, Chen Qingye always ended up accepting Tang Tang's proposals.

Receptioning the newcomers is a task for YuYang, and he ends up helping the unsociable and towering LiHuan, the kind of person that does everything to be disliked. But after better knowing each other, he discovers that the giant isn't that bad of a person at all...

Woojin is so good with animals you could call him human catnip! But, thanks to his gloomy appearance and shy personality, he has a hard time connecting with people. On the opposite end of the spectrum is Sangyoon, the kind owner of an animal cafe. He meets Woojin by chance and is entranced by the way he bonds with animals. He ends up inviting Woojin to come work for him at the cafe. Woojin falls for him at first sight but is unable to work up the courage to make a move!

Underage
Kei, a transfer student from the US, mistakes Yuri for a girl. Even when he realizes Yuri's a guy, he won't stop flirting with him! Yuri's always had a complex about his cute name and appearance, and Kei keeps pushing Yuri's buttons from day one at school! Kei's weirdly attached to Yuri. He's way too touchy-feely, and on top of that, he loves to call Yuri "cute”.