During her early schooling, Onodera Saku adopted a male persona to console her mother after the passing of her brother. During this time, she found herself seated beside Nishioka, a student often ridiculed because of his long hair, which surpassed the typical length for boys. When a classmate provoked Nishioka and spurred him to cut his hair, he came to Onodera's aid the following day when the same student stole her toiletry bag. Eventually, Onodera renounces her facade and confesses her feelings to Nishioka, who rejects her. What led to the downfall of their relationship?