Please add more Water to WHM’s identity

[Shouko]

...Isn't there a spell LITERALLY called Holy though?

Yeah in this case it's just unspecified damage, aka non "holy" magic, think of most of the spells in the game as glamored unspecified damage into the element or type. It has no impact on doing double damage or whatever to voidal mobs or undead, just like lightning won't do more to water or water to fire.