Miuna Shiodome is an important character in A Lull in the Sea who starts as a quiet and mature third-grade girl. She is the daughter of Itaru Shiodome and her late mother was a resident of the sea, making Miuna half-sea and half-land. Despite being reserved, she has a playful side and shows strong emotions, especially when it comes to her family and Hikari Sakishima. Miuna faces many inner struggles due to her unique background, her feelings for Hikari, her relationship with Akari Sakishima, and her role in the big events of the story. As the series goes on, Miuna grows from a shy child dealing with loss and jealousy into a strong and caring young teen. She does not end up with her first love, but she faces her feelings bravely and moves forward positively, making her a relatable and touching character for many fans.
Miuna is first introduced as a third-grade girl living on land.
She often appears calm and quiet.
After five years, she becomes a second-year student at Mihama Middle School.
Her hair becomes much longer, usually tied up in a unique style.
Miuna is quiet and seems mature for her age.
She often keeps her feelings to herself but is not afraid to show her active side when relaxed, like playfully kneeing Hikari.
She cares deeply for those close to her, but can be moody and jealous, especially towards Akari Sakishima.
Over time, Miuna learns to be more open and expressive, even showing kindness and putting others above herself.
Miuna’s mother died three years before the story, and since then, she lives with her father Itaru Shiodome.
Akari Sakishima, her aunt, often helps look after her, doing chores and being like a sister figure.
Miuna was very close to Akari but became distant after discovering Akari was dating her father and might become her stepmother.
Miuna is half-sea thanks to her mother and half-land because of her dad, giving her a unique view on both worlds.
Though born on land, later in the story Miuna gains Ena, the special skin that lets sea people breathe underwater.
This is unusual and is discussed by other characters in the show.
- Sayu Hisanuma: Her best friend since elementary school.
- Itaru Shiodome: Her loving father.
- Akari Sakishima: Her aunt and mother figure, with whom she has a complex relationship.
- Hikari Sakishima: The boy she falls in love with and deeply cares for, although he does not return her feelings.
- Akira Shiodome: Her younger half-brother, who only listens to Miuna.
- Manaka Mukaido: A friend and rival in love; their relationship matures as the story continues.
- Miuna often calls Akari "Akachan," stressing the "ka" sound.
- Sayu jokes that kids who like someone older are called "Doricon" (actually a misused word for "Lolicon").
This term became a meme among fans.
- In the second part of the series, Miuna becomes the main storyteller, and the producer considers her the main character in this arc.
Struggles with Akari and Family
Miuna lost her mother and grew close to her aunt Akari, who helped around the house like a big sister.
When Miuna discovers Akari is dating her father and may become her stepmom, she grows distant and even tries to push Akari away.
She opposes their marriage for reasons she keeps hidden, but later shares them with Hikari, leading to a heartfelt conversation and finally, honest reconciliation with Akari.
Opening Up and Making Friends
After making peace, Miuna becomes more cheerful and open, showing her sweeter, more childlike side.
She helps Hikari and her friends prepare for the Ofunehiki festival and shops for Akari's sake.
She worries deeply when she learns about the danger of winter sleep and the cold affecting the sea but is reassured by Akari and Tomoru Sakishima’s support.
The Ofunehiki Festival Tragedy
During the disastrous Ofunehiki, Miuna is left shocked and helpless.
When Akari resurfaces from the sea, Miuna instinctively calls her "Mom," showing her true feelings.
Five Years Later and Love for Hikari
Five years after the incident, Miuna is now a second-year middle schooler at Mihama Middle School.
Her hair is long, and she cares for her little brother, Akira.
After learning from Akari about Hikari's feelings for Manaka, Miuna is upset but continues to care deeply for Hikari even after all these years.
She gently rejects a classmate, Atsushi Minegishi, who confesses to her.
Miuna’s Growth and Good Deeds
When Hikari returns, Miuna puts his happiness first, cheering him up by repairing and waving the festival flag and other thoughtful actions.
She offers her help to find Manaka and even encourages Hikari to help Manaka when she is lost and unconscious.
When Manaka wakes up, Miuna gives her a seaslug stone as a pendant, showing her support and friendship.
Acceptance and Moving Forward
Miuna never ends up with Hikari, but she finds peace with herself and decides to move forward, surrounded by her loved ones' smiles.
In the last episode, she calls Manaka by her name without honorifics, showing how their relationship has grown.
She bravely accepts her unreturned feelings and looks toward the future with hope.
- “Why can't Hikari go to sleep like the others...?”
- “It’s okay. Even if I’m not chosen, I want everyone to be happy.”
From the second part of the story, Miuna serves as the main narrator and the story is told through her point of view.
The scriptwriter said that Miuna is considered the main character in the second part of the series.
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