Shinkaigyo no Anko-san

A human girl named Wakasa Otomi resides in a town that has accepted fish people as residents. These individuals bear physical traits of their aquatic species but take medication to maintain human lower bodies. Otomi is enthusiastic about meeting fish people, and when a new student named Tsutsumi Anko arrives, she is introduced to a girl from the lantern fish species. Anko feels somewhat insecure about her deep-sea origins and her tail, which is less cute compared to those of other fish girls. The two navigate everyday high school experiences while dealing with challenges specific to being fish people.