Sosuke Kaburaya is a detective struggling to make ends meet. While on a case, he happens upon Sara da Odin, a princess from another world who wields magical powers. Sara quickly adjusts to modern Japanese life as Livia de Udis, a knight from Sara's kingdom, arrives to find her. Soon enough, both Sara and Livia's positivity begins to rub off on Sosuke and the neighborhood's cast of characters.

Takao, who is training to become a shoemaker, skipped school and is sketching shoes in a Japanese-style garden. He meets a mysterious woman, Yukino, who is older than him. Then, without arranging the times, the two start to see each other again and again, but only on rainy days. They deepen their relationship and open up to each other. But the end of the rainy season soon approaches …

Told in three interconnected segments, Takaki tells the story of his life as cruel winters, cold technology, and finally, adult obligations and responsibility converge to test the delicate petals of love.