Having lost his mother at an early age and raised alone, Shinnosuke finds himself drawn to the warmth and maternal care of his friend's mother, Miki. Overcome by his feelings, he eventually confides in her. Completely inexperienced in matters of sex, he allows Miki to gently guide him through his first intimate lessons. Overwhelmed by sensations he's never known, Shinnosuke loses himself in passion, desperately craving her body. His desire, a mix of raw emotion and innocent longing, deeply moves Miki, who in turn begins to respond to his touch, climaxing in sync with him. Their bond grows stronger as they embark on a secret, intimate journey together.