Even in death or rebirth…You won’t be able to get rid of me…He ended his life be...
Technically it is the previous version of the Seme who did the worst of it (current is no angel either). But we've got a possessive jerk who tries to force MCs affections either way, and then realizes MC is prepared to die to stay away from him. Also a funny one, you want to watch a grown man be jealous of his 5 year old because MC likes him better? But also can't do anything because if he's not nicer MC is ready to start the reincarnation process again? Then this is for you!