I really like your entries to these jams, they're so silly
Still haven't gotten around to playing Undertale myself, but I know about how the combat system works, and I think its awesome that you stayed true to it, with the hostile vs pacifist solutions to fighting. That in itself, with the combat that's already present in the game, feels like enough to pad out a full submission, honestly.
I really liked the goofy reactions and videos on the side of the combat box, and since the combat wasn't crazy complex, they weren't super distracting, which is good. I didn't get to see if Cece had a death sprite, but Gigi doing the Family Guy death pose got me good.
Would be awesome to see you come back and add what you had plotted out at the end of the game, but all in all good work!