Cirno Day 2021 was celebrated with a channel event on September 9, 2021.
Rips related to Touhou, especially referencing "Beloved Tomboyish Girl (Cirno's Theme)" are uploaded.
- See also: Category:Cirno Day 2021
- Gourmet Race (JP Mix) - Kirby Super Star
- Nintendo GameCube Startup (JP Version) - Console/BIOS Music
- Disco Necropolis (Graveyard Stage) (JP Version) - Skeleton Boomerang
- Beloved Tomboyish Girl (Beta Mix) - Touhou 6: The Embodiment of Scarlet Devil
- Bad Apple!! (In-Game Version) - Touhou 4: Lotus Land Story