The Seino family, whose husband is away from home, lives with his wife, Fumie, and his son, Tatsuya. Fumie was worried about Tatsuya's shy and quiet personality, and had always thought that something had to be done. One day, Tatsuya unusually brought a friend home. Fumie felt Tatsuya's growth and breathed a sigh of relief. However, Fumie and Tatsuya, who do not know that Yoshino has a dark side, fall into a trap. [*Bonus videos and bonus images are not included]
