Yume Irido

Born Yume Ayai, she was a reserved and unassuming girl during her middle school years. She and Mizuto dated before parting ways at graduation. Following their parents' remarriage, the two unexpectedly found themselves living under the same roof as step-siblings. Entering high school, she reinvented herself entirely, emerging as a popular and academically accomplished beauty. The pair made a pact declaring that whoever becomes conscious of the other as the opposite sex loses. Though she asserts herself boldly in the rivalry over the role of 'older sister,' her feelings rooted in their shared past continue to quietly influence her.