Looking for a long lost yaoi

Hi everyone there's this yaoi I read a few years ago I don't remember much and don't know if it's completed here's what I remember: it begins in our world a modern settings two boys are in love but the uke don't want to give in those feelings because I think he's scared and kind of reject the idea, the. He's isekaid in another world, darker and more ancient ( don't know the period ? It's not old old).

He's a member of a weird family and I think he's mistreated ? Then he meet the seme from the other world and think he must have been isekaid here too cause there's no way but if I'm correct the semes not from the uke world ( or lie about it)

Also there's a plot i think about a murder or a crime as i remember the police being involved and also I think the seme was tan but I could be wrong


I know it doesn't make a lot of sense but It would mean a lot if someone could remember and help me!! （￣へ￣）