My beloved brother is a diehard virgin! Moka, who loves her brother very much, enrolls in the same school as him after he saves her from being molested on the train one day. From then on, Moka constantly teases her brother with sexual advances under the pretext of giving him rewards! Note that the recorded contents may vary depending on the distribution method.

大好きなお兄ちゃんは筋金入りの童貞！そんなお兄ちゃんの事が大好きなモカは兄と同じ学校に入学！ある日モカが通学電車で痴●に遭ってる所を兄が助けた事から、モカはご褒美と称してお兄ちゃんに所構わずエッチな誘惑を仕掛けまくる！※ 配信方法によって収録内容が異なる場合があります。