Rindō, a top idol with worldwide fame from the Striking Fist fighting game series, sports long pink hair typically in braids and a visual design evoking a Chinese female martial artist. Her primary motivation is a personal grudge against Subaru Amanohara, fueled by Subaru's persistent reappearance across sequels despite Rindō's repeated victories. Rindō views this as blocking her own unfulfilled dream of becoming an idol.

This grudge ignites a confrontation during Seijirō Kanmuri's tournament, where Rindō battles Subaru in the third round. After nearly defeating Subaru, Nona interrupts, questioning Rindō's true desires. Rindō reveals her idol aspiration, believing it remains out of reach. Her attempt to resume the fight is halted by Karate Mao, Subaru's father, intervening to protect his daughter. Witnessing Karate Mao mock Subaru's dreams prompts a shift in Rindō; despite her resentment, she empathizes with the dismissal of a woman's ambitions.

Consequently, Rindō allies with Subaru against Karate Mao. Though initially outmatched, this marks a pivotal moment as she sets aside her long-held grudge in solidarity with Subaru's struggle. Their collaboration ultimately enables Subaru to discover new strength during the battle. Earlier, Rindō expressed admiration upon meeting Haruto Bouida, declaring her affection and identifying herself as an idol—a moment that visibly pleases her. Her abilities are consistently shown through martial arts proficiency, particularly her history of defeating Subaru.