Mio is a lively and athletic girl with a youthful and healthy appearance. She has short, light brown hair that frames her face, often tied back with small clips to keep it out of her eyes. Her large, expressive brown eyes convey her energetic and spirited nature. A notable feature of Mio is her sun-kissed, tanned skin, reflecting her active lifestyle and her time spent outdoors, particularly as a swimmer.

Mio’s casual style often includes her school uniform, consisting of a white blouse, a plaid skirt, and a sailor-style collar. Outside of school, she is seen wearing sporty and comfortable outfits that highlight her active personality.

Mio is cheerful, kind-hearted, and dependable, serving as a source of warmth and positivity for those around her. She displays great emotional resilience, particularly in the wake of her older sister Ushio’s untimely death. While Mio is deeply affected by the tragedy, she channels her grief into supporting her family and friends, showing a mature understanding of the importance of moving forward.

Her upbeat demeanor is balanced by moments of vulnerability, especially as the mysteries surrounding Ushio’s death and the strange happenings on the island begin to unfold. Mio’s determination and bravery come to the forefront as she faces these challenges, revealing her inner strength and unwavering loyalty to her loved ones.

Connection to Ushio and Shinpei
Mio’s close bond with her sister Ushio is a driving force in her character development. Ushio’s death leaves a significant void in Mio’s life, but her memories of Ushio inspire her to stay strong. Mio also shares a deep connection with Shinpei Ajiro, a childhood friend and Ushio’s adoptive brother, whose return to Hitogashima becomes pivotal to uncovering the island’s secrets. Mio’s interactions with Shinpei highlight her supportive and caring nature.

Involvement in the Island’s Mystery
As the story progresses, Mio becomes entangled in the supernatural events plaguing the island. Her courage and resourcefulness play a vital role in aiding Shinpei’s efforts to uncover the truth behind Ushio’s death and the eerie occurrences surrounding their home. Mio’s determination to protect her loved ones drives her to confront dangers far beyond her understanding.

Ushio Kofune: Mio idolized her older sister Ushio, and her death deeply impacts her. Mio’s memories of Ushio serve as a source of strength and motivation as she works to uncover the truth behind her sister’s mysterious death.

Shinpei Ajiro: Mio shares a close relationship with Shinpei, seeing him as both a friend and a source of comfort in the aftermath of Ushio’s death. Her trust and support for Shinpei play a crucial role in his quest to solve the island’s mystery.

Kofune Family: As the younger sibling, Mio strives to support her family emotionally, particularly in the absence of Ushio, stepping into a more responsible role.