"First Love Love Letter" is used as the ending theme for "That Fiancée Does Not Know First Love."
| Usage location | ED |
|---|---|
| Composer | Seiya Hatakeyama |
| Arranging and mixing | ふみん |
| Lyrics by the author | Hatsune Nonaka |
| Performed by the singer | Honoka Tachibana |
Content and inclusion
"First Love Love Letter" is used as the ending theme for "That Fiancée Does Not Know First Love."
Related entries
- Related works:That fiancée does not know his first love
- Composer:Seiya Hatakeyama
- Arrangement and Mixing:ふみん
- Lyrics:Hatsune Nonaka
- Performed by:Honoka Tachibana
- Included audio versions:More engagement packs
References
- Production Support Committee: The Fiancée Doesn't Know Her First Love
- Author BOOTH: More fiancée pack
Data compiled on: 2026-10-07.