Itsuka no Sora

Our hero is a sophomore college student living by himself. He has a childhood friend that is a girl, but he doesn't have a real girlfriend. His hope of finding someone special is fading away when his part time job eats up his time. Then he meets Eri, who happens to have lost her memory. The encounter with Eri leads our hero towards his destiny and forces him to search for his true identity...

[From gamelexgs]