[ His eyes are on Rukia's sword as it reverts back to a more standard looking katana. He has questions about this, of course, but first he'll answer hers. ]

This knife will transform into a sword for those with Galran heritage. The Galra typically design weapons and technology to activate only when interfacing with a member of the species.

[ All of which gets said rather casually. He has nothing to hide on that front, even if he can already anticipate the follow up question. ]

What's the significance of your sword's transformation?