| Album | Wild Arms the Vth Vanguard Original Score Vol. 1 |
| Composer | Noriyasu Agematsu |
| Disc | 3 |
| Track | 15 |
| Length | 4:24 |
| Instrumentation | Harp, violin, viola |
| Previous Track | I'll Never Lose Because I Don't Want to Lose |
| Next Track | The Crimson Flower Blooms in the Cold |
One Day You'll Forget Your Hopes and Dreams (Japanese:望みをいつか希うことも忘れて)[1] is a song used in Wild Arms 5 most times that the player is in Mithysmere.