The younger sister of my DQN friend is different from her brother; she's not a delinquent but a serious girl. I had been noticing her large breasts, but... such a little sister said to me, 'You can touch my breasts, okay?' It seems she has a crush on me and we've been secretly getting intimate. Even though I know this is bad, if she presses her I-cup breasts against my face, there's no way I can keep my composure! My little sister, who usually can't do anything because of shame, accepts my clingy sex without any hesitation. The happiness of sweet, in-the-moment intercourse!
