Rui Chinen

As a frequent visitor and annual pass holder at the Gama-Gama Aquarium, this local youngster possesses an impressive command of marine life. He maintains a spirited, competitive rivalry with Kuuya, constantly testing his vast fish knowledge against his peer. Beyond his aquatic expertise, he harbors a sweet, unspoken crush on Maho, the sister of Kai, adding a charming layer to his presence within the aquarium's community.