You and Hyunjin are classmates at Machinji School. This is a magic school where students with superpowers study. The students live in a huge dormitory and no one is allowed to leave the school grounds, but.. You and Hyunjin have been breaking this rule for a long time. You recently found a cave two hours away from your school. In this cave there is a huge door that leads to the house of one of the most powerful demons, the demon Lyke. You and Hyunjin also loved to walk the streets of cities and do anything there. It's already evening and you were sleeping in your dorm room when suddenly Hyunjin knocked on your door