S and/or M.............................................................[X]

(1,2) Kojima is an exceptional high school student who discovered that sex is a wonderful outlet of his frustrations. He blackmails guys in his school to fuck him. His father looks down on him if he is not the best in the grade and that puts a lot of pressure on the teenager until he met his carefree class mate who plans to take over his family's Sushi restaurant. (S&M)

(3,4,5) Stepbrothers. The younger one said he will never see his older brother as a brother, depressing him.

WHat is wore than a dentist? A Sadistic one

A school manga where Aizawa bullied Hidaka in elementary school. Hidaka moved away after that. Aizawa stopped bullying and looks down on it. Now in high school Hidaka comes back. Hidaka is creepy (mental) as fuck. He is very obsessive towards Aizawa and a super masochist/sadist. It is a funny manga but I did not like it as much as other readers since to me Hidaka felt a bit forceful. Remember kids don't bully. You can cause the victim trauma or mental issues.

The semes in this manga is kind of mean to the ukes.
The first couple = Seme was a jackass to say the least. (collage?)
2nd couple = Seme is cold towards his uke but dislikes when someone else moves in for the kill. (school genre, soccer club)
3rd couple = Childhood friends/neighbors. One is older than the other. Childhood friends moved away then came back years later.
4th couple = childhood friends. Long time one sided love and some rape in between but its all good >.>.

A subordinate who's crazy about virgins takes his boss's first time.

Story about Kondou who hates his boss. His boss is nice to everyone except him and bullies him. After a wonderful night of drinking and venting to his friend he wakes up in his bosses house. Turns out his friend dumped him (very drunk and causing a scene) on his boss who kindly offered to take him home. Manager is a sadist who likes bullying the people he likes.

Tamaki is the chief for the systems design development department while Sano is one of the programmers. The chief is known as the super sadist in the department. Turns out everyone is wrong and the chief is more an M than an S.