Junko

Junko is the final boss of touhou 15, Legacy of lunatic Kingdom. Junko's power is to purify anything, it refers to the refining of substances to remove impurities, such as in the refinement of metals. She used this power on her own grudge, strengthening it such that she became the embodiment of her resentment as a divine spirit, without even a need for an identity anymore. She used this power on Clownpiece and other hell fairies, transforming them into beings of pure life-force that would threaten the Lunar Capital. Details such as the extent of this ability and how it works are currently unknown, but she also claims to be able to kill the heroines unconditionally if they didn't use Eirin's drug and got hit at least once before facing Junko.