It wasn't that he didn't care other people were around. It's just he never saw them to begin with.

Around the world, many cities were bustling with activity and life. However, a plague hit those cities, and spread out. Those cities still had life in them, but only that of the dead. This tragic story follows a group known as DBSK, as they manage to escape from the zombies, and the death trap that is the cities. The group must re-learn what it means to be human, lest they end up like one of them.   (Td;lr: DBSK zombie apocalypse au)

After a number of dreams, Leo gathered all of his courage, and called Hongbin to meet him at Black Cups, but he wasn't sure if he had that much courage.

A struggling artist in the midst of an art block, Jaejoong finds a man who brings life and color into every dream. Then they meet, and it turns into a horrible game of hide and seek, as if Yunho is running from something. He left leaving Jaejoong frustrated and confused, yet came back like everything is okay.