Jin was your average human being. He just has the ability to summon demons for some reason. Which is okay, as the demons he knows are quite nice and love his cooking. In return for dinner, they keep his apartment mouse free, which is a good deal in his opinion. If he one day accidentally summons one of the Princes of the Underworld, one of the Seven Sins, no one has to know...  

Yongguk likes naps. Staying up all night chatting with his friends online and studying, he naps through the day in school. Which has worked out fine for him so far. He doesn't want to interact with his classmates. But there's this one guy who always wears a hoodie, who seems to get in trouble with some of the other classmates quite often. He can't help but worry about him. At the same time someone is messing up his things and leaving notes of apology. It's all very confusing

Namjoon was moving to a new apartment. It was larger and cheaper than his old apartment, a good deal. It was a good distance from the university where he would be finishing off his masters soon, and the studio where he worked wasn't too far either. A good deal. Really, the only thing that wasn't on the contract was his new roommate trapped in a mirror.

The first time Mark met Jackson left him a bit out-weirded but it wasn't a bad first impression either.    

Yongguk has found the love of his life.

This place is shabby, it's dark and doesn't have a lot of space. There's barely space enough for two people and it's filled with junk. But it's theirs.

Yongguk's on verge to breaking. Almost every weekend his heart is being almost stabbed to death by his best friend. Every day he's being tortured by the guy whom he fell in love with. Every look reminds him of what he will never have. His world turned upside down the day he met his best friend. Everything turned brighter and better. But soon the torture of his heart began, as he watched from the sidelines how the guy he loved threw himself at others. People who weren't him. And now he's on

This is their place. This is their playground. This is their world.

Himchan's watching Yong Guk working in their studio and thinks of everything that has happened there.