The elder sister Moe and the younger sister Yuna have discovered... the pleasure of female-on-female sexual intercourse! Of course, it would be dangerous if they were found out, so they enjoy it secretly, avoiding the prying eyes of others. Their passionate kisses with their tongues entangled have a taste of immorality. They lick each other's sensitive bodies from head to toe. It feels so good they can't hold back their voices. Attacking, attacking, being attacked, cumming, cumming, being made to cum...