Sold at Denkigai Matsuri 2018 SUMMER in Takadanobaba held Aug 9, 2018.
Music Production: Hayato Asagiri
"Primula" - Opening Theme
Vocals: Riryka
Composer: Hayato Asagiri
Arranger: Hayato Asagiri
Lyrics: Yuto Shimizu
Album was composed by Hayato Asagiri and was released on August 09, 2018. Soundtrack consists of 12 tracks tracks with duration over . Album was released by Alumi Soft.
CD 1
| 1 | プリムラ | | |
| 2 | プリムラ (off vocal) | | |
| 3 | わんこのしっぽ | | |
| 4 | 小春日和 | | |
| 5 | 小豆環浸 | | |
| 6 | 待つ間が花 | | |
| 7 | 犬が歩けば笑顔になる | | |
| 8 | 朗らかな慮下がり | | |
| 9 | 笑顔溢れる場所には福来たる | | |
| 10 | 手を繋いでスキップ | | |
| 11 | 熱い模様 | | |
| 12 | 千紫万紅 | | |
