Completed BL I've already read

Hagiwara Tatsumi is given tickets to a superhero show aimed at children from a client at his job. When he is complaining about the fact that he will never use them, he meets Maki Yuuto, who asks if he can take them for his son. Tatsumi admits he is gay, and only has one rule: Never fall for a man with a family but then Tatsumi meets Maki Ritsu, Yuuto’s son and breaks his rule, by falling for a man with a family.

Underage
A boy-meets-boy story about an imaginative boy who loves animals and a Maasain exchange student in Japan!

This is a comedic and explosive love story between a middle-aged, retired delinquent and a rich and pure delinquent-admiring university student!

Underage
When he was in high school, Eiji was the leader of the school gang at Ara High, only for delinquents. Now he lives a peaceful life. But then, his younger brother gets into some trouble and Eiji ends up helping him. He meets the present gang leader at Ara High, Rui, who falls in love at first sight. Now Rui is relentlessly pursuing him...!! An aggressive sweet-faced rebel and a straight, tough former gang leader. A battle to protect his pride and chastity begins!

Underage, Blackmail
Chuta's friend helps him with his "Mushroom Syndrome".

Underage
1-2) The World Revolves Around You, The World is in Your Arms
3) The False Barber Manga
4) Stupid and Beautiful
5-6) Cheap Soul, A Bright Future
7) Gokujou Dessert (Excellent Dessert)

Underage
Kawachi's enjoying another day of watching (stalking) his favorite guy, the very nice Yuto, from the shadows. As he's peeping on Yuto putting away some stuff in the gym storage room, something unbelievable happens...! Caught witnessing Yuto showing his true self, Kawachi panics and blurts out that he'll keep quiet if Yuto pleasures him! Kawachi feels terrible because what he's doing is blackmail! But, he just can't help himself.

Woojin wants nothing more than to escape reality. Hwon wants nothing more than to be with Woojin. Baffled by the intensity of Hwon’s love, Woojin makes a series of absurd demands to push him away. But no matter how cruel the demands are, Hwon never gives up

Underage
The cool and manly Uito has a sweet, cutesy side he shows only to Sei, they don't miss an opportunity to kiss whenever their parents are out, and work hard on their finals and part-time jobs so they can live together soon. It's no surprise they go wild on their graduation trip...!

Izuhara Sou, the leader of the crime prevention group "VOICE" that protects east Karasugaoka realizes he's in love with the man he keeps butting heads with and leader of the rival group "Karasukai", Shinba Tetsuji...!?