ima be real final boss is actual pain, :[ you heal less than they do damage and they just heal spam once they are below half, it feels like im being asked to destroy a mountain with just hands, plus you cant even grind up extra stuff other then one thing but feels like im being punished for trying to beat the game :<.
am i like missing items or something?
Nearly 20 days late, but you can return to previously visited minigames to grind for items upon reaching endgame; they can either be used to cast stronger spells, which I think do extra damage (up to 3 health bars) depending on which attack you use them on, or to nullify/reflect certain types of attacks (the gems). Also, you can go back to Puck after revisiting Southern Ruby Island to get access to the strongest spell in the game.