Ryo gave birth to Masaki when she was twenty. The father disappeared, and Ryo pushed back against the opposition from those around her to raise Masaki on her own. Their relationship as mother and son was good; they were more like friends than a typical parent-child pair. One day, Masaki invited Ryo on a hot spring trip. Unlike Ryo, who was excited about their usual two-person trips, Masaki intended to confess his feelings to her.
