My son, who was shy and had no friends for a long time, made a friend called Yuma. Yurie thanked Yuma from the bottom of her heart and welcomed her when she came to her house. I would be happy if you could get along with my son as it is. I thought so, but Yuma's true purpose was Yurie's mature body. One day, Yuma visits her son's absence and demands Yurie's body as an exchange condition to continue friendship with his son. Such a relationship is not allowed. But I don't want my child to lose friends. Yurie's choice is in front of the sneaky desire to suddenly reveal her true nature and strip her fangs.