https://www.mangago.me/read-manga/night_by_the_sea/ Omegaverse
https://www.mangago.me/read-manga/exotic_love/
https://www.mangago.me/read-manga/the_beast_must_die/ - top is quite literally a psychopath
https://www.mangago.me/read-manga/dreadful_night/ - mc is inside a cliché horror game with npcs trying to find out who is the assassin. Used to repeat all the routes without finding significant information, he accidentally saw a view that would flip all the tables, and a NPC known for being trustworthy could be now capable of the unknown. Not only that, the NPC becomes "a player". Mc is suuuper chill (which helps me because a scaredycat would leave me anxious) and their communication is amazing
Sadistic Beauty p. 2
you dont have to read the first to really understand whats happening in the second
Psychotic , manipulative toxic seme / uke ( no cheating) recommendations please.