A young girl named Ruka, who had been living a wandering life in Osaka, is taken in by Fumi, an elementary school teacher. Later, Ruka spends time in Obihiro, Hokkaido, with Natsuhiko, who was her sister's lover, and forms a friendship with a high school girl named Maori. However, the fate that awaits her is always harsh. After arriving in Tokyo, Ruka becomes a musician and begins singing on the streets under the name Kyrie. There, she reunites with Maori, who now goes by the name Ikko and survives in Tokyo through her ever-changing cosplay and relationships with men. From Ishinomaki, Osaka, and Obihiro to Tokyo—Ruka, while being tossed about by fate, weaves a grand lyrical poem through her determined life.
Luca lost her family in the Great East Japan Earthquake causing her not to be able to speak. However, her singing voice shakes the hearts of those who listen to her. It is a hymn of compassion played by Luca and the people.