I can't find it anymore but I remember MC being a serial killer I think? I'm not sure but when he transports into a fantasy world, he's not a good person. I also remember every character being psychotic and dark? Also, a girl whose a B-word having a mental breakdown. This story is completed. Yet I cannot find it anymore and have looked at all completed novels under the KR section. Maybe it wasn't KR? But I was pretty dam sure though. I don't think it was Death Notice.
Could it have been Summoned Slaughterer? Sounds similar, at least. He wasn't a serial killer in the original world cause of laws...but the moment he was freed from the shackles of his original world... Not sure the one in that that has a mental breakdown is a a bish, but...it could still be that series? *shrugs*
Sounds like that japanese story The Shield Hero. He was a decent guy but got betrayed by other 4 supposed 'heroes' who got sent to another world with him and then there was the bitch of a princess and a dumbass king....
Are you referencing that Black Maria assassin series? Cause that definitely does have that one crazy girl who gets even crazier, heh.
Nah that's not completed yet but thanks for trying Nah that story isn't really psychotic but more like low-level stupidity lol YES THANK YOU I hate how they changed the pic and took off the chapters, it made it harder to find. How did you know?!