In her sister's bedroom, the first sight of her younger sister's shyness and a man's body sends a shockwave tightening her chest. A sister and her younger sibling get caught up in the forbidden act between a man and a woman. This scene stirs the pure heart of the younger sister. Amidst mixed feelings of disdain and jealousy, she begins to see her sister as a mature woman. Before understanding the meaning or morality of the act, she simply starts accepting the reality of it. The emotional transformation throughout this process strikes deep at the heart.