Miuna Shiodome is the 3rd grade elementary school daughter of Itaru Shiodome and Miori Shiodome. Miuna met Akari Sakishima (Miori's friend) when she visited them shortly after she was born. She loves Akari but the thought of losing her like she did her mother caused her to refuse to accept Akari as family. Later on, she overcomes her fear and fully accepts Akari as her new mother. She has a crush on Hikari Sakishima. During the five year period of the time skip, Miuna could usually be found staring out at the ocean waiting for Hikari Sakishima to return. After the time skip, she enters middle school with Sayu Hisanuma. Her feelings for Hikari have only grown stronger, even to the point of rejecting one of her other classmates who has liked her since elementary school. When Miuna falls into the sea by accident, she develops Ena on her skin which allows her to breathe underwater like her mother. In episode 25, she becomes the Ojoshi-sama but she is later saved by Hikari. Miuna is a cute young girl with straight, shoulder-length black hair and gray eyes. After the timeskip, Miuna has grown her hair out very long and ties it up in little loops on each side of her head. She is often seen wearing her Mihama Middle School uniform with long, black stockings. Miuna is very shy and often relies on Sayu Hisanuma (her best friend) to do the talking. She isn't very direct about her feelings, often using gum to write them on a wall instead of telling them verbally, as a 9-year old. After the timeskip, Miuna is a bit insecure but is now a smart, kind, bold, and independent young middle school student. Miuna cares very much for her mother even though she and her best friend Sayu were shooing Akari Sakishima away since she learned of Akari's relationship with her father.