Actually, that information about the Buster Sword is revealed from the PSP game Crisis Core, not the core FFVII game itself. Angeal is only in CC. I haven't seen Last Order or played Before Crisis, so I'm not sure if Angeal is mentioned in either of those spin-offs. Funny that Cloud is essentially dissociative and here we have Lightning taking on someone else's identity by way of a costume change.
Nasozan, Midgardsormr Server. R.I.P.
75 BRD, SAM, WHM; 74 THF, BLM; 69 PLD, BST.
Darth Howie wrote:
Woe unto he who tries to be helpful, for upon him shall be lain the burdens of all.
- Squall 15:11