Chizuru Ikeda, Chitose’s younger twin, mirrors her sister’s appearance but swaps red eyes for vivid green. Her icy, detached demeanor clashes with Chitose’s warmth, earning wary respect from classmates who find her intimidating yet not unkind—except toward Kyōko Toshinō, whom she openly resents.

Her world orbits Chitose, their bond woven into shared baths, meals, and nights in the same futon. Removing her glasses sparks romantic daydreams of Chitose entwined with Ayano Sugiura, fantasies that leave her drooling rather than mirroring her sister’s nosebleeds.

Kyōko’s relentless pranks and accidental identity mix-up cemented Chizuru’s disdain, viewing her as a threat to her imagined Ayano-Chitose union. Despite Kyōko’s overtures, Chizuru remains coldly dismissive.

The *San Hai!* season softens her edges: classmates Takane and Haruka bridge her aloofness, forging tentative bonds once they discern her indifference isn’t malice. This shift marks her cautious steps beyond Chitose’s shadow.

Born March 10, Chizuru stands 1.55 meters tall with blood type O. Her middle school life anchors a narrative of sisterly devotion, simmering rivalries, and fragile social growth, unchanged across adaptations.