[Autumn]

Since there is no Hikari on the continent to get rid of Parasite Infections, may I suggest an alternative and more painful method of their expulsion other than by getting parasite removal kits:

Getting hit by Fire Damage has a chance equal to the damage received to make the parasite explode, causing additional fire damage to the infected person. (Like LV * 2 to make it so that you don't get juiced by a low lvl encounter.

If my meme suggestion doesn't work, some kinda healer who does it too is cool....I guess......