Hosik's story
Semes is a straight psychopath. This is an unhealthy relationship glossed over as cutesy or whatever because they have kids together (from rape) and the seme is a good looking princely (criminal) dude. He puts tracking devices on the uke without consent, stalks him throughout the whole story, shows up at the uke's (parent's) place with a key he stole and made himself, gets jealous when the uke talks to other guys, looks through the uke's phone without consent, forces the uke to have sex when he doesn't want to, overall forces the uke to do things he doesn't want to (like peeing) and is a controlling, pushy, possessive, manipulative yandere. Did I mention he raped the uke and got him pregnant?
Shima-chan Chi no Tsugai Jijou