I was liked by her sister, but I let her be a little devil sister even though she was nearby. She secretly kisses him so that she won't find out, and eventually they get into a relationship... Since My Sister Will Find Out

彼女の妹に好かれてしまったボクは、彼女が近くにいるのに小悪魔な妹にされるがまま。彼女にはバレないようにこっそりキス責めにあう、そしてそのうちそれ以上の関係に…。「お姉ちゃんにバレちゃうから、大人しくしててね小悪魔な笑顔と執拗な舌使いにメロメロになってしまった濃厚な誘惑のベロベロ接吻性交NTR