But Now I Must Go: After his impromptu race with Rin receives interrupted by a rainstorm, Natsuya abruptly decides that he is heading again to Japan, mainly because swimming with Rin built him realize what he's definitely missing (Nao). This makes Rin to some degree uncomfortable. Establishing Character Moment: Him bumping Hiyori and Asahi whilst coming into the competitors, then trouncing anyone in the pre match.