well, we come into the story where he has already been a neighbor for awhile to Cys.. But actually he is watching him, but he also loves him. I am not sure if he is CIA or FBI? haha.. but one of those I think
or Jin was a freelancer?
Yeah, he could be just like a hitman and that dude who killed those people probably is that long haired dude with him in the end and they might be dating.
Read Jin to Neko was Yobu to Konai.
IM KINDA CONFUSED WHO IS JIN REALLY? HE JUST APPEARED FROM THE WINDOW AND THATS IT. NO EXPLANATION ABOUT WHO HE IS WHAT HE DOES AND ETC. IM CURIOUS