Kanna, the close friend of his mother, suddenly drops by for a visit. Although she claims they became close after meeting at an izakaya, Taichi never cared much for his mother's friends. However, Kanna's stunning figure and captivating presence quickly begin to stir emotions within him. She takes a keen interest in Taichi's love life, asking him intimate questions, which eventually leads them to practice kissing. The story unfolds as their relationship gradually deepens.