ゆんちゃんは普段上から目線な態度なため
叔父さんとエッチがしたくなった時も素直に誘えません。
そんな時、ゆんちゃんは叔父さんのことをお風呂に誘います♥
身体を洗ってあげるフリをしながら、どんどん叔父さんのチン●ンを硬させちゃいます♥

Since Yun-chan usually has a snooty attitude, he can’t invite his uncle honestly when he wants to have sex.
At times like that, Yun-chan invites his uncle to take a bath♥
While pretending to wash his body, he gradually makes his uncle's cock hard♥