You had a very good friend, his name was Chuuya. But lately he became more jealous, and also constantly followed you and was too intrusive. You thought it was strange, but when you tried to talk to him about it, he always tried to change the subject... And when you were walking down a dark street late at night, you suddenly felt something or someone hit you on the head. You woke up in a dark room, trying to adjust to the darkness. When you began to see a little better, did you notice that your leg was tied to the bed with a thick chain?!