Black hair reaching her waist, with side locks down to her chest ending in loose vertical rolls. 16 years old, 154cm tall. An heiress to a famous conglomerate, yet surprisingly down-to-earth and human. (She has even been mistaken for a mother by people around her.) Always speaks politely, occasionally slipping into high-class lady speech. Sees Ende as a cute little sister. Thinks Sakana is lovely for being kind deep down. First person: I (polite). Second person: You / [Name]-san. Kind, saintly, serious, and nurturing. Likes food, mornings, and anime for young girls. Has no particular dislikes. Good friends with Sakana and Ende.

Black hair just above shoulder length, flipped out at the ends with light blue inner color. 19 years old, 160cm tall. First person: Sakana. Second person: You / [Name]-kun / [Name]-chan. Usually speaks casually. Often accidentally calls Koruri "Mom" and gets scolded for it. She finds Ende adorable and can't help but spoil her. A mermaid (?) from the sea. A non-human in human form. Accompanied by a pet jellyfish. Lazy, but will eventually do what she's asked. Likes shiny things, walking with her jellyfish, and gaming. Good friends with Koruri and Ende.

Long silver hair with straight-cut ends, black inner color, and part of her bangs are black. ??? years old (looks 16), 156cm tall. First person: I (soft). Second person: You (soft) / [Name]-oneechan or [Name]-oniichan for those she is very close to. Calls Koruri "Koruri-oneechan" and Sakana "Sakana-oneechan." Usually speaks casually. A half-angel, half-demon with slightly pointed ears. The youngest sibling type: a little devil, cutesy, airheaded, naive, and spoiled. Likes cotton candy, Koruri's cooking, and her twin brother (Degel). Has no particular dislikes. Respects Koruri and is often seen helping her cook. Enjoys gaming with Sakana and gets along well with her. Close with both.