At the end of the year, Umao-kun spent his winter vacation at his grandfather's house in the countryside. There was Yui Auntie at his grandfather's place. Since Yui Auntie always stays in the countryside and it's pitiful, I thought I'd make her happy using my grandfather's tools. Umao-kun is an innocent and reckless boy with a massive dick that belies his age! A drama of female body service and masochism!
