- Kitto Wasurenai (きっと忘れない)
- Catalog Number
- Kitto Wasurenai (きっと忘れない; Surely You Won't Forget)
- Tasogare ni My Lonely Heart (黄昏にMy Lonely Heart)
- Kitto Wasurenai (Original Karaoke)
- Tasogare ni My Lonely Heart (Original Karaoke)
"Kitto Wasurenai" is ZARD's tenth single. The title tracl was used as the theme song for the second season of the Fuji TV dorama Shiratori Reiko de Gozaimasu!. It reached #1 on the weekly Oricon charts and sold 532,200 units, becoming the #53 single of 1993. It also sold 339,930 units in 1994, becoming the #81 single of that year. This single charted for fifteen weeks and sold a total of 872,130 copies.