On the day when the princesses of the demon world and the princes of the demon world got engaged, three women suddenly appeared and knocked the six of them into the human world. When the six fell into the human world, they caught up with the vortex of time and space and divided the six people into three pairs. With the remaining memories, the six people were looking for the poppy crystal, rose crystal, rose crystal, dark night crystal, deep sea crystal, natural crystal that they must use to return to the demon world, and they were looking for everyone...