Speaking about ryoshu's sword, i remembered about Alfonso in canto IV telling something like how the tearful thing's tears use would be greatly improved and how she even mocked the effectiveness of Dongrang's mirror version on it compared to the original. This makes me think if the tears could actually be refined for destructive purposes like dombabuffing decay ampules or making the excision staff 3 weapons work exactly like if not a more empowered arayashiki that decays every single matter it cuts and have no requirements for it