A film about the lives of and relationship between two teens, a high school-aged boy and his younger niece. The movie begins by showing the nature of their relationship to each other, their family, and what makes them kindred spirits. It then jumps ahead about five years, when the boy discovers there is more to life than basketball and working in the family’s candy store, but his niece is not so sure she likes the new complication.
18 year-old Ai lives the life of a mischievous teenager. She ignores her studies, putting all her passion into baking cakes that always come out burnt, lopsided, or hard as a rock. Ai cannot imagine a greater happiness than one day making the perfect pastry, until someone new walks into her life and Ai discovers some things in life are sweeter than cake.
Kayako Kirishima of the third grade at a high school feels a sense of isolation in school life and vague admiration and uneasiness in the future. One day she makes friends with Endō who is isolated from her surroundings because she remained in the same class for another year. Kayako is strongly attracted by Endō who shows her a world that she didn’t know.