Hello, Happy World! are Kokoro Tsurumaki (CAST: Miku Ito), Kaoru Seta (CAST: Azusa Tadokoro), Hagumi Kitazawa (CAST: Yuuri Yoshida), Kanon Matsubara (CAST: Moe Toyota), Michelle (CAST: Tomoyo Kurosawa)
M-01
Composer: Hitoshi Fujima (Elements Garden)
Arranger: Hitoshi Fujima (Elements Garden)
Lyricist: Asuka Oda (Elements Garden)
M-02
Composer: Ryota Suemasu (Elements Garden)
Arranger: Ryota Suemasu (Elements Garden)
Lyricist: Asuka Oda (Elements Garden)
Album was composed by Hitoshi Fujima / Ryota Suemasu and was released on December 05, 2018. Soundtrack consists of 4 tracks tracks with duration over about 15 minutes. Album was released by Bushiroad Music.
CD 1
| 1 | kimigainakucha! | 04:02 | |
| 2 | wacha-mocha-pettan koushinkyoku | 03:53 | |
| 3 | kimigainakucha! -instrumental- | 04:02 | |
| 4 | wacha-mocha-pettan koushinkyoku -instrumental- | 03:51 | |
