Koto is a high school student and Miya's childhood friend. She works part-time at a coffee shop, and she met Kousuke there when he came as a customer. her father is rarely home and her mother treats her poorly, only caring about the image her daughter gives.

My Daughter's Friend
Kosuke has lived to play the ideal self as a father at home and as a manager at work. However, his life changes 180 degrees when he meets his daughter’s friend. In front of her, Kosuke was able to be his real self and his worn-out heart was healed. However, He knows that these are feelings that should never be held.