Description
Hiromi Seki, a 15-year-old from Toyama, has chestnut brown hair, red eyes, and stands 155 cm tall. Her natural resting expression unintentionally conveys anger or defensiveness, causing deep insecurity. She practices smiling before a mirror to appear more approachable.

Responsible and protective toward younger idols, she often seeks guidance from older individuals. She shares close bonds with Hotaru Shiragiku and Nono Morikubo as unit One Steps, and performs in GIRLS BE NEXT STEP with Chizuru Matsuo and Yasuha Okazaki. Additional unit work includes Caper Parade, and she befriends Mary Cochran, who admires Hiromi’s Valencian paella skills learned while working in Spain.

Her journey evolves from self-doubt to confidence, overcoming early struggles with defensive posture and perceived aggression that clashed with her cute idol style. Through persistent practice and support, she achieves genuine smiles during performances, reflecting growth documented across media. Card artworks trace this shift from strained expressions to relaxed joy. Solo songs "Rakuen" and "Handmade Smile" underscore themes of perseverance and self-acceptance.

Hobbies include crafting accessories inspired by fellow idols. She carries a hand mirror for expression practice and rubs her cheeks before performances. Personal trivia notes her Toyama roots, shared birthday with Kai Nishijima, and her mother’s fandom of idol Hajime Fujiwara.