Theme Song "Colorful Heart Line"
Vocal: 桜庭遊乃 (CV. Juri Kimura), 仁篠珠季 (CV. M・A・O), 高月紗恵香 (CV. Haruka Terui)
Lyrics: Fumiya
Compose/Arrange: Tooru Hashizaki
Ending "true heart essence"
Vocal: Juri Kimura, M・A・O, Haruka Terui
Lyrics: Fumiya
Compose/Arrange: Yukihiro Ibuki
Album was composed by Tooru Hashizaki / Yukihiro Ibuki and was released on April 28, 2016. Soundtrack consists of 9 tracks tracks with duration over . Album was released by PARTICLE.
CD 1
| 1 | カラフル･ハート･ライン | | |
| 2 | true heart essence 遊乃＆珠季ver. | | |
| 3 | true heart essence 珠季＆紗恵香ver. | | |
| 4 | true heart essence 紗恵香＆遊乃ver. | | |
| 5 | カラフル･ハート･ライン inst.ver | | |
| 6 | true heart essence inst.ver | | |
| 7 | 遊乃’sキャラクターテーマBGM「do YOU kNOw me?」 | | |
| 8 | 珠季’sキャラクターテーマBGM「ほわほわレッスン」 | | |
| 9 | 紗恵香’sキャラクターテーマBGM「paper forest」 | | |
