Lena Ashford hails from an Arizona ranching family, embodying a cowgirl archetype complete with her signature cowboy hat. Initially quiet and reserved, she showed little prior interest in romance and demonstrated notable inexperience with the opposite sex.

Her life shifts dramatically upon encountering Wataru, a young man visiting his father. Their disastrous first meeting leaves him with severe memory loss, prompting Lena to assume full responsibility for his care. During this dedicated recovery period, she develops deep romantic feelings for him.

When rivals Tomoka and Fumie Fusono emerge competing for Wataru’s affection, Lena’s initial unease transforms into fierce determination through his encouragement. She evolves into a persistent protector of their relationship.

A pivotal change involves her own body image: once ambivalent toward her large breasts, Lena begins leveraging them strategically to capture Wataru’s attention and gain an edge over her romantic competitors.