Modding WolfRPG games is way less common than RPGMaker games sadly. Personally, if I could do it, I'd mod the game just to edit the standing picture of Byakuren (and the Succubus I guess) to have thicker arms and slightly bigger hands, because they look distractingly small...
Incidentally, I tried a Bonus mode speedrun where I deliberately ignored both the sword in the tutorial AND the map (which means no teleporting to earlier areas) to see how far I'd get by only using the jump attack to damage enemies and sequence breaking all the bosses, and the answer is: REALLY far.
I got all the way to getting the "Summon motorcycle" sub-weapon, but I unfortunately found something horrible...you can't use sub-weapons if you don't have the sword! If I could, I'd 100% have beaten the game without it, but as it is, it's not feasible or practical to ignore the sword right now.