Annan lived happily with her husband and son-in-law, Yuji. Her only worry is that she doesn't know how to deal with Yuji who refuses to open up. How can she open up to an adolescent boy... One day while thinking about it, Annan discovers an erotic book in Yuji's room, and she runs into Yuji on the spot. Frozen two... However, this situation triggers Annan to take an unexpected action...