A question that might be relevant: How are we handling Lava Release in this game?

Becuase it might actually be several elemental releases, not just one.

Son Goku and his Jinchurki us literal lava in both solid and liquid form (as well as Chakra that behaved as lava,) but there are several other ninja from The Rock Village who use a form of Lava Release that creates quicklime instead(and one of them can create ash with Lava release, so the ash form and the quicklime form are probably the same releases.) There are also a family in the Cloud Village with Lava style who use it to create vulcanized rubber.

And then their's Mei's lava release that makes corrosive mud. Mei's version isn't even written the same: Lova Release is written with characters that means "to melt" and the normal lava release is accented with a radical that changes the meaning to "to melt with fire" but Mei's is written with one that says "to melt with water," despite hers being a combination of fire and earth just the same as the others. Some English translations translate her techniques as "Corrosion Style"

So for the sake of this game, is it one element that's super versatile, two-hybrid elements (Lava and Corrosion,) with the same component elements, or four(or even five, if ash and quicklime are separate and the ash user just has both forms) hybrid elements with the same components