Ryōya Nekoyashiki is a main character in the series, serving as a Patron within the hero-pair structure called Patraisers. These teams consist of a Sugar and a supporting Patron, dedicated to reinvigorating people's frozen hearts. Ryōya partners specifically with Asahi Yuga, who acts as their team's Sugar. The main story centers on their dynamic and partnership as they operate together in their Patraiser unit.