Very nice intro, both musically, thematically and visually. Gameplay is fun, don't really have much to add on that front. This begs for a storymode and the opportunity to romance characters I think, perhaps not the hamster... Works well as is, though more music and sound effects would be nice, but I think taking a page from VA-11 HALL-A, some visual novels or perhaps Catherine could be good.
Storymode divided into days with different challenges, opportunities to talk and interact with the different characters at the bar. A jukebox. Perhaps a drinking beer mini-game. Just a few thoughts.