Naoe Mihashi, mother of Ren Mihashi, resides with her son and ensures he wakes on time each morning. Her marriage to Reiichi Mihashi began with defiance—eloping after Reiichi’s father opposed their union, they settled in Creaker Villa. Orphaned early, losing her father in childhood and her mother in her final academic year, she later met Reiichi at university. Financial hardship followed as Reiichi faced joblessness, compounded by her unexpected pregnancy. Post-birth, Reiichi embraced the role of househusband while she returned to studies after a three-month hiatus. Tuition costs strained their finances, compelling scholarship applications, with most funds funneled into her education.

Physically mirroring Ren, she boasts short, peach-tinted light brown hair, sharp cheekbones, a pale complexion, and light brown eyes. Standing 162 cm—slightly shorter than her son—she favors casual T-shirts and pants, switching to dress-suits for work. Her expressions, notably an endearing flustered demeanor, echo Ren’s, hinting at shared shyness.

A university professor, she engages briefly with figures like Hanai’s mother and admires Yoshirō Hamada’s sewing prowess. Observant of Ren’s baseball fervor, she notes his habit of clutching a ball even in sleep.

Though personality specifics remain sparse, her choice to elope signals resolve. Juggling family duties, academics, and poverty underscores her resilience. Collaborative efforts with Reiichi navigate adversity, while her motherhood blends logistical care—like punctuality reminders—with attunement to Ren’s emotional landscape and dedication to baseball.