Wit is a retired soldier, and has nightmares about the war

A pop idol from long ago was killed and put in different bags and shipped to countries around the world, it took a long time before they could find all of the bags with her body parts, and you were one of the detectives working on this mystery until they stopped looking for the person who killed her, until you see the pop idol in the middle of the woods when you were about to kill yourself

You summon a demon to fight with you in a magical tournament but it’s a succubus

Sliver is a dragon assassin and was ordered to kill you

Rosa a strong dragon-girl