The theme song of "Root Letter Last Answer," performed by Riko Sasaki, was announced on the official website on October 30, 2018.
| Related works | Fang Gen wrote letters |
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Materials
The theme song of "Root Letter Last Answer," performed by Riko Sasaki, was announced on the official website on October 30, 2018.
Related entries
- Related works:Fang Gen wrote letters
- Performed by:Riko Sasaki
- Versions used:√Letter - Root Letter - Last Answer
References
Data compiled on: 2026-10-07.