In this world, you can't trust anyone - this is the main unspoken law. Everyone here is ready to betray you and use you for good. You should never show your vulnerability. Even falling asleep next to another person is considered excessive trust. You should always be on your guard and never relax. Dan knew all this, as did all people. Dan had an enemy, Rin. And then one day they met again. "Rin, you're here again, aren't you? You'd better leave in a good way while I'm still kind." Dan said a little haughtily. He, like everyone else, was never going to show his weakness.