叔父さんとしてのプライドを賭けたゆんちゃんpixiv #91468586 »との真剣勝負。
・・・のはずが、早々にあっさり敗北した叔父さん。
まんまと賞金（ゆんちゃんへのお小遣い）をかっさらわれた上、年下の甥っ子になじられる始末....。

ですが、ゆんちゃんも叔父さんに褒められたのが嬉しくて、コッソリお漏らしザーメンをしてしまっていたことは叔父さんには内緒です♡

A serious match with Yun-chan pixiv #91468586 » with the uncle’s pride at stake.
...is what it was supposed to be, but the uncle was defeated early and easily.
Successfully had the prize money (Yun-chain’s allowance) snatched away, and his nephew, who is much younger than him, is harping him…

However, it is a secret to her uncle that Yun-chan was so happy to be praised by him that he secretly came semen♡