The second story left a bad aftertaste... a 10 year relationship ended just like that!? He cheats and the girlfriend says ok you can be together!? I mean, it doesn't feel right! o_O'
The other stories were good.
I understand how you can be turned off by the fact that a 10 year relationship ended so easily. Long distance relationships are hard. Sometimes the relationship just becomes different and you both are walking different paths. Saki clearly stated she isn't a clingy person which I'm guess the type of person he wanted. Yeah, they look good together doesn't mean they were meant to be. I am not condoning that he cheated on his long time girlfriend. That was wrong of him.
I would like to see the moment they met and what's going on at the demon world.
I don't know if it shows anything about the demon world cos I haven't read the whole thing yet, kind of started after I read this one... but it does show how they met.... http://www.mangago.zone/read-manga/mitsuiro_devil/
Oh please update!!!!!!!