Sutemi no Koubousen
The protagonist is a stalker who is in love with a senpai from highschool, they used to get along until they didn't, then the senpai graduated and entered to the self defense force college, as the protagonist wasn't that smart he entered a public college, but he work hard an he got transferred to the senpai's base. Then after being forced to participate in a matchmaking show by the self defense force and where the prota also participates because, well nobody is gonna steal his man, senpai accepts that he has had feelings for the prota since highschool and they become a couple.
Ijime-kko ni fukushū!
The protagonist wants revenge on his bully, so he asks his occultist sister for a potion that will make his bully suffer.
Nitta-kun Chuuihou
The protagonist discovers that the scariest delinquent in school is a masochist.
Saiaku no Jinsei