The younger brother, declaring "I love you," embraces his naked older sister who is currently living with her boyfriend. Touched by his gentle and sincere feelings, the sister hesitates but ultimately responds to his emotions by sucking his cock. The mysterious college girl younger sister (20 years old) confesses she has always masturbated while thinking of her older brother. Wanting to deepen their relationship, she invites him to her apartment and pleads to make love naked together. Pure romantic feelings intertwine as emotional intensity and physical intimacy collide in this episode.