Demon Fangs can be used as currency to purchase some of the best items in the game. Here are the methods by which you can collect them.

Finishing Moves: After defeating an enemy, it'll hurl upwards in a slow motion death throw. Execute the right brush technique on the enemy during this animation to earn a demon fang. For imps, perform a Power Slash. For bud ogres, perform Bloom.

Well-Timed Counter: When you're able to equip a reflector instrument as a secondary weapon, you can perform counters on enemies as they attack you. If your timing is perfect, you'll earn a demon fang.

Golden Fury: Use the Golden Fury attack--learned from the sensei in Shinshu Field--to knock out one demon fang from each enemy you fight.

Load Screens: During load screens, press X to earn fangs. On screens with paw prints along the bottom, tap X in time with the paws that appear (making them larger). On screens with prints in the center, mash X rapidly to fill the screen with 50 prints to earn a demon fang.