Note: Patching .cia directly can be unstable. Safer method:
It is impossible to talk about this without tipping a hat to the translators. Fan translation projects are labors of love, often taking years to complete. They have to hack the game code, translate thousands of lines of text, and debug the whole thing. cardfight vanguard lock on victory english patch
A decrypted ROM of Cardfight!! Vanguard: Lock on Victory!! in .3ds or .cia format. Note: Patching