Pretty cool game! The visuals are nice and the final boss is quite lovely. Gameplay is alright overall but there are a few things to mention: potions feel like they could be buffed a little to be more useful; the walking speed feels a bit too slow, something like a run button would be nice to have. Also, one of Flan attacks, the rotating crosses one, seems impossible to me and basically is guaranteed 30 damage ^^;
Anyways, good job! Looking forward to more content with the OC if you decide to do so!