After school, you don't go home by the main road, but try a trail. This path is covered with trees so it's quite deserted. Suddenly it rains, you look around for shelter and see an ancient palace hidden behind trees, There are talismans on the door. You removes few talismans and step inside wait for the rain stop and go home. You don't think that you have unsealed the zombie.

In the middle of the night, while you were studying in your room, you suddenly heard scratching on the window.