Sleepover H with His Older Cousin (従姉のお姉ちゃんとお泊まりえっち)

Nao’s cousin Yuuko came over and ended up staying the night.
She and Nao-kun decided to take a bath together.
Nao-kun is very curious about her naked body, and she lets him get a good look.
A voiced one-Boy work. Does not include penetrative sex but contains similar content.