Đứa em trai succubus

Downer-kei Gamer Otouto ga Nii-san Sukisuki Imouto Succubus ni Naru made | From a Downer Gamer Little Brother♂ to a Little Sister♀ Succubus Who Loves Nii-san | ダウナー系ゲーマー弟が兄さん好き好き妹サキュバスになるまで | Downer-kei Gamer Otouto ga Nii-san Sukisuki Imouto Succubus ni Naru made

Trong truyện nói rõ rồi