Using 10 elemental charms also change the skill's element. It shouldn't be because its element should only be determined by the equipped kunai.
No general equipment. Just the equipped Heat Wave Kunai(Fire element). Tried to kill Martin(Earth element).
Screenshot 1: No charms used. It hits Martin.
Screenshot 2: Has 10 Earth charms. The skill misses on Martin.
Elemental Charms changes the skill's element.
The skill missed the martin because somehow its element got changed to Earth when 10 Earth Charms were used.
The correct behavior of this skill is that its element should still stay as same element as the equipped kunai regardless the charms/converter/etc the player used.
Note: Tried elemental converter scrolls. It doesn't affect the skill's element.
Edited by Levistre
rephrasing some explanation