Towa Hanamaki balances roles as Yoba Academy's student council vice president and a performer in the music group Photon Maiden. Her family's active involvement in a local festival youth organization ensures her regular attendance at these events, where a widely circulated social media photo once brought her significant attention. She actively studies idol concerts to incorporate techniques into her own performances, demonstrating her strong interest in idol culture.

Physically, she possesses short light blue hair, lime green eyes, and a slender build, standing 153 cm tall. Her personality blends energetic enthusiasm with noticeable onstage nervousness, occasionally leading to moments of self-doubt. She enjoys high-calorie sweet foods, prompting reminders from groupmate Ibuki to moderate consumption before performances. Compliments from fellow members or situations involving medical settings, like vaccinations, easily fluster her.

Within Photon Maiden, group activities such as a Tokyo outing strengthen their bonds. She notably requested synesthesia-experiencing member Saki to analyze the colors associated with each member's sound.

Her background includes an aversion to infirmaries, doctors, injections, and powdered medicine. She owns a dog named Millecrepe (often shortened to Millec) and mentions enjoying snuggling with it during cold weather. Her character design has been adapted for crossover events, featuring appearances based on Nakano Yotsuba, Araragi Karen, Hoshino Hinata, Saitou Miyako, Tao Yuifa, and Mai Thi Yoshimura.