Taiyō no Uta

Taiyō no Uta

A Song to the Sun, known in Japan as , is a movie directed by Norihiro Koizumi starring the Japanese artist and singer Yui. In the movie, she plays the role of Kaoru Amane (雨音 薫 Amane Kaoru), a 16-year-old girl who has the rare skin condition xeroderma pigmentosum (XP), a disease that makes the ultraviolet radiation of sunlight potentially lethal to her. Yui's character is partly based on herself, as she is a singer and guitarist, and she performs three of Yui's songs in the movie; "It's Happy Line", "Good-bye Days" and "Skyline". There has been a 2006 Japanese TV drama starring Takayuki Yamada and Erika Sawajiri, a manga by Bandō Kenji and Minatsuki Tsunami, a 2015 Vietnamese / Japanese drama, and a 2018 American remake, all based on the film.


Kaoru has Xeroderma Pigmentosum, a medical condition that forbids its bearer from being exposed from direct sunlight. She sleeps during the day, and is active at night. She busks every night in front of a station, playing the guitar. Outside her bedroom window, she spots a high school boy with a surfboard. She watches him and his friends visit the ocean every morning before going to sleep. One day, she introduces herself to him without letting him know about her medical condition. He is Kōji Fujishiro. When her friend drags her home, they sit by her window, while they watch Kōji meet his friends. Kaoru explains everything, and her friend notes that she probably goes to the same school as him, and offers to spy on him for her.