Kai Nakamura

[Kukuru's](https://anilist.co/character/204495/Kukuru-Misakino) classmate and childhood friend. He helps his fisherman father, boarding a boat with him before sunrise, and giving his catch of the day to the Misakino family. He is a longtime confidante of Kukuru, and has volunteered to work at the Gama Gama Aquarium during the summer.

(Source: Anime News Network)