男なら絶対断れない禁断の逆NTR！新しくクラスの担任として赴任してきた先生は同級生の彼女のお姉さん。決して許されない関係だと分かっていたのに最低なボクは彼女の誘惑に耐えきれず…理性を試す誘惑淫語、溢れ出す気品、大人の色気、たわわなHカップ巨乳、漂うフェロモン…「顔もチンポもこんなに真っ赤にして…恥かしいの？…可愛い」「声出したら妹にバレちゃうよ？いいの？」囁かれ焦らされ寸止めされて…教え子であり妹の彼氏である僕のチンポをもてあそぶ…！教室で用具室でトイレで声の出せない状況でチンポを剥き出しにされシゴかれしゃぶられる裏切りの背徳性交！
No man could possibly refuse this forbidden reverse NTR! The new teacher assigned to our class is the older sister of my classmate's girlfriend. I knew it was a relationship that could never be allowed, but I, the worst kind of guy, couldn't resist her temptation… Seductive dirty talk that tests my reason, overflowing elegance, mature sexiness, bountiful H-cup breasts, pheromones in the air… "Your face and your dick are so red… Are you embarrassed?… So cute." "If you make a sound, your sister will find out, you know? Is that okay?" She whispers, teases, stops just short of the climax… Playing with the dick of me, her student and her sister's boyfriend…! In the classroom, in the equipment room, in the toilet, in situations where I can't make a sound, my dick is exposed, stroked, and sucked in this betrayal and immoral sexual encounter!

– JavGG.net