人生に絶望していた大学4年、卒業式当日 陰キャ童貞のボクの目の前に現れたむっちりスケベ姉ちゃんに教えてもらった生(性)の悦び うんぱい
I was in despair about my life as a fourth-year college student, but on the day of my graduation ceremony, a voluptuous, perverted older sister appeared in front of me, a virgin, and taught me the joys of raw sex.