Kronosin

Hey all! You guys seem like wizards on here with how well you can find obscure anime. Here’s a tough one though. A few years ago, I remember watching a anime set sometime in the future. I don’t remember much and what I do remember is a bit hazy so take that with a grain of salt. I remember it was about a normal dud that finds an escaped girl with green hair. I think she might’ve been a Martian or something... but she was definitely not normal. I can’t remember much else besides a scene where they get almost intimate and that she lives in his closet... maybe. Again it’s super hazy. Also for some reason “melon bread” keeps jumping out at me. to whittle down the selection, it wasn’t Code Geass or Elfen Lied. I don’t really expect anyone to know and I’m definitely not much help with the details but any leads would be super useful. Thanks!