Usagi Drop

Daikichi Kawachi is a 30-year-old bachelor. He meets an unfamiliar girl named Rin while at his grandfather's funeral. He comes to find out that girl is his grandfather's illegitimate child. There is a palpable rift between Rin and the rest of the family.

What kind of clothes should I get her? What about dinner? What do I do about school? Daikichi is swept away by one responsibility after another. On her first day of preschool, Rin's expression shows worry as Daikichi walks away from her to go to work.

Daikichi returns to his parents' home to find clues regarding Rin's mother's whereabouts. Although Daikichi's parents were against his becoming Rin's guardian, they soften up because they cannot deny that it feels like they have a new grandchild.

Rin is enrolled in a new, local preschool and befriends a boy named Kouki. Kouki's mother is a single parent who also happens to be very beautiful - a combination that causes Daikichi's heart to skip several beats.

The day Daikichi will meet Rin's mother finally arrives. However, he is completely shocked when he learns what Masako is really like. As they part ways, Masako makes a specific request to Daikichi.

Rin finally enters elementary school. Daikichi suggests planting a memorial tree for her. He wonders if Souichi had planted a tree for Rin after she was born. Though not his ideal solution, he seeks out Masako once more for answers...