Mirei Kiritani

Daikichi learns that his recently deceased grandfather has an illegitimate daughter with an unknown mother. The girl's name is Rin and she is just 6 years old. Everybody in Daikichi's family looks at the girl as an embarrassment and wants no part of her. Daikichi, annoyed by his family's attitude, decides to raise Rin by himself. Even though Daikichi himself has no experience raising a child and is still single.

Sawako Kuronuma looks miserable on the outside, but is actually a positive-minded girl, who looks up to Shota Kazehaya, a sociable and friendly boy. Perceiving Sawako's good intentions, he secretly has feelings for her. Sawako meets Kazehaya and makes her first friends, Chizuru and Ayane but in comes Kurumi proclaiming her love for him... Will Sawako and Kazehaya ever find out about each other's feelings?