[Trigger warning: rape]
This is a true yaoi manga. except for the last story, most all of the story just jump into the sex right away and don't really have a big plot or anything.
That being said all the story involve tons of rape. And if you believe what the anime "Fudanshi Koukou Seikatsu" tells you, that the uke is the "female role" and all of these rapes lead to the rapee coming to fall madly in love with their rapist. Then that's pretty fucked up. (Spoiler: "Triggeryer Stuff") As I've seen tons of stories aimed at men that are like that plot. Raped until they enjoy it, etc. What worse is when women are involved they tend to start sounding like children after being raped so much.
Lest to say that the manga wasn't very good. It was pure porn and no substance whatsoever.
The last story however was the ONLY enjoyable story out of the book. That was because they fell in love and wanted to be together. ( )