Ok, cute art style, I won't spoil the mechanic though it's a little familiar, but reasonably implemented. Fairly short to burn through to all the endings. Would question calling this a 'dating sim' though, it has sim elements but, anyway.
Oddest thing is having just brute forced my way through every option, and 'finished' the game boots to an 'end screen' and no access to menu, saves, can't go back. Is that a deliberate choice? I'd like to re-absorb the ending, but, do I have to re-install the game and play from scratch?