Mihoshi Takamura serves as the girls’ basketball team adviser at Keishin Academy, leveraging cunning over court expertise. She orchestrates her nephew Subaru Hasegawa’s recruitment as coach by threatening to expose his childhood diary’s maternal marriage aspirations—a scheme masking her genuine investment in the team’s growth, discreetly mentoring players off-court. Petite at 154 cm with thigh-length purple hair and yellow-green eyes, her youthful appearance earns the "loli" label from the school nurse, fueling comedic clashes due to the nurse’s flirtatious lolicon tendencies. Beyond her mischievous facade, Mihoshi strategizes covertly: hacking rival team analytics, arranging conflict-resolution training camps, and mediating disputes, such as during a beach trip’s heated clash. As Nayu Hasegawa’s sister and Subaru’s aunt, Mihoshi’s September 28 birthday hints at a Virgoan knack for order. Her driver’s license and martial arts skills linger underutilized, while a rivalry with Ogasawara, the boys’ team coach, spotlights her competitive zeal. Though official media skims her backstory, sudden appendicitis briefly sidelines her, testing her role as the team’s stabilizing force. Light novels omit detailed visuals of her, yet her presence persists—a teasing, enigmatic figure weaving cohesion through playful manipulation and quiet advocacy, ensuring the team’s incremental triumphs.