The opening theme song of "RIDDLE JOKER" is performed by Miyuki Hashimoto and Sayaka Sasaki.
| Purpose | 2018 original PC OP theme song |
|---|---|
| Performed by the singer | Miyuki Hashimoto, Sayaka Sasaki |
| Complete vocal parts for the song | The first and second sections are swapped between the two singers' singing parts |
Original theme song
Miyuki Hashimoto and Sayaka Sasaki jointly sing the opening theme song for "RIDDLE JOKER," with the full length included on the original soundtrack.
Two singing segments
When introducing the full song, Famishin pointed out that the first and second sections swapped the vocal parts of the two singers, resulting in different sensations, and specifically mentioned the performance of the second section, section B.
The duo lead vocalist on the 2026 stage
In the SongFes 2026 performance review, Famishin commented on the synergy created by Miyuki Hashimoto and Sayaka Sasaki, and specifically noted that Sasaki's high notes extended the upper voice prominently.
Timed recording and first stage duet
On October 26, 2017, "astral ability" was recorded at Shibuya Studio HIPPO. The production team arranged for Miyuki Hashimoto to record first, Sayaka Sasaki to follow, with Famishin and Angel Note members present; The two lead singers each completed their own singing parts.
Famishin recalls that the first duet stage performance of this song was at Yuzu Soft SongFes on September 29, 2018. In addition to singing together, Miyuki Hashimoto and Sayaka Sasaki also performed with hands-on gestures to coordinate their performance.
Related entries
- For works:RIDDLE JOKER
- Complete song album (track list):RIDDLE JOKER オリジナルサウンドトラック
- Performers:Miyuki Hashimoto
- Performers:Sasaki Saida
- 2026 SongFes Performers:Miyuki Hashimoto
- 2026 SongFes Performers:Sasaki Saida
References
- Yuzusha SongFes 2018: Miyuki Hashimoto and astral ability
- Yuzusha SongFes2018: Sasaki Sasaki's original OP catalog
- Yuzulog: RIDDLE JOKER original soundtrack release, vocal parts and track order
- Famishin: A look back at SongFes2026 production and performance
- Yuzulog: Astral Ability theme song recording site
- Famishin: A look back at the performance of Yuzu Soft SongFes 2018
Data compiled on: 2026-10-10.