Oh lawd, he crazy

Seme locks up the Uke. Uke doesn't like it at first, but later goes with it.

I'm not sure whether to include this, so I'm adding it. Possibly the weakest manga on this list in terms of "crazy". Seme is a sadist but also incredibly possessive and some of the things he says got that crazy vibe but it's always passed off as jokes. So that's why it's weak in this list.

Yandere Seme.

Uke is aware of the "crazy" and doesn't like it at first. But then Uke goes off the deep end and embraces the obsessiveness like the Seme. It's not *super* crazy, but gets on the list for some of the looks and strangling

A very "sane" yandere seme. Less "I want him all for myself" and more "I want to make a mess of him". Uke knows about it. Hates it, then likes it.

*crazy alarms BLARING* - Yandere Seme puts a leash on the Uke after spiking his drink. Uke hates it at first and eventually goes as bananas as the Seme.

Seme is an absolute ball of ~chaos~ as you'd expect from a demon. Uke is a human turned demon, and he adjusts fairly well when you realise he's a human facing these challenges - which also unfortunately fits him in the category of crazy.

Uke plans revenge on the Seme, obsessed with revenge but also just on the Seme. Uke is still in love with the Seme.

Crazy Seme cop. Uke sees the crazy, doesn't really mind it. Possibly he's crazy too lol

Very obsessive Seme. At some point you can see the moment he "snaps". Still quite tame.

Very tame Yandere Seme. Judging by the authors other work, this is going to ramp up later, but for now it's just "Seme's got a bad personality and is probably a lil nuts"

Second story: Super powerful Seme that gives off ~huge~ yandere/possessive vibes