Owaranai Melody wo Utaidashimashita.

"Owaranai Melody wo Utaidashimashita." is performed by Mikako Komatsu and served as ED 1 for the 2013 TV anime Kamisama no Inai Nichiyoubi, known in English as Sunday Without God (神さまのいない日曜日). Released in 2013, the song closed episodes of a series animated by Madhouse.

It plays as a polished J-Pop piece, driven by a light mid-tempo pulse, soft keyboard color, and a melody that widens gradually into the chorus. Komatsu keeps the vocal line clear and controlled, so the song feels buoyant and reflective at once rather than overtly dramatic.

That gentle rise fits a story set in a damaged world where small gestures of care matter against a harsh order of life and death. The track was released as Komatsu's debut single on July 24, 2013, under the same title, and it later appeared on her first full album e'tuis in 2014.