[HKD-127] I was captivated by my grandson's body.

Yako Kinjo lives alone in a house like a hot spring inn. Miyako stubbornly refused to take a bath together though the son married couple and the grandchild came back by using the consecutive holidays. Miyako had a tattoo on her chest and wanted to keep it secret from her family. However, it is found by grandchildren's yuto, and Yuto is sexually aroused rather than rejecting the tattoo, and has the relation of Miyako and Yako. Miyako was captivated by young men's sexual desire overnight.