提案/Suggestion
There is no barroth charge blade weapon in the game when it exists in Monster Hunter Rise. This also happened with Rathalos Hammer but this one was already fixed.
Edit: Given that in the future we will have style customization available for charge blade, and barroth being a monster with riftborne variant, whenever this happens could be a great chance to implement it, or before this happens, in order to have time to upgrade the weapon to grade 8 and unlock style customization.
現状/Current Status
No Barroth Charge Blade in game.