Misa Tanaka excels as a track team member at her school, leveraging her athletic prowess to secure a sports scholarship. Her tomboyish personality shines through assertive banter and playful teasing. Persistent overtraining leads to a career-ending knee injury despite warnings, resulting in revoked scholarship and profound emotional distress. This triggers a vulnerable infirmary breakdown followed by seeking solace through physical intimacy with a classmate.

Post-injury, she grows self-conscious about her physique, voicing concerns about being "too muscular" during intimate moments, despite peers finding her attractive. Visual adaptations highlight her curvier build with a noticeable bust, which repeatedly draws commentary. These remarks often provoke her visible embarrassment or irritation.

Her dynamic with the male protagonist features belligerent sexual tension and relentless teasing, especially about her appearance. Beneath their contentious exchanges lies mutual respect and a deepening bond that evolves into romance. Their relationship strains when she accepts admission to a distant sports college, forcing an emotional separation.

Later, she resurfaces as a tourist in another character's hometown. A chance encounter sparks a new romantic relationship, which advances to marriage and parenthood, as confirmed in a concluding photo montage.