Hikari Koshino is the main protagonist of the anime series Komekami! Girls. She is one of seven sisters who are the children of the Rice Goddess, born from the traditional belief that seven gods reside within a single grain of rice. Her specific age is ten years old. She has distinctive red hair that reaches down to her waist and green eyes, and her design includes elements such as half twintails and a dress with shorts.

As a central character, Hikari is part of a family of sisters who have been left in the human world after their mother, the Rice Goddess and queen of the rice deities, was called back to the heavens under urgent circumstances and is unable to return. The core motivation driving Hikari and her sisters is to search for traces of their missing mother. They operate from their base in Usa City, located in Oita Prefecture, and have the ability to teleport to various Hachiman shrines across the island of Kyushu as part of their search.

Her role in the story is that of a leader and a participant in the sisters' journey. Alongside her siblings, Hikari engages with local communities and solves problems that arise in the different places they visit. Through these experiences, the group learns about food and participates in cooking battles, which serves as a primary means of their growth. Her development is tied directly to this journey, as she and her sisters mature by confronting challenges, deepening their understanding of cuisine, and working together to find their mother.

Regarding her personal abilities, no specific unique powers or skills are documented beyond the collective ability to teleport between shrines, which appears to be a shared trait among the Koshino sisters. Information on Hikari's specific personality traits, her individual relationships with each of her six sisters beyond their familial bond, and a detailed account of her character arc is not available.