Ririna Sanada

A top-performing student from a prestigious all-girls academy who finds herself paired with Yukari Nejima under the government's mandatory matchmaking system. Initially indifferent to romance and unaccustomed to close friendships, she undergoes a profound change of heart upon discovering the secret love between Yukari and Misaki—choosing to champion their relationship rather than stand in its way. As time passes, she becomes increasingly aware of her own awakening feelings, caught in a tender struggle between friendship and something deeper. Her emotional journey makes her one of the most compelling and growth-driven heroines in the story.