The number of times Bakudo 99 is used is 2

This is false - Bakudo #99 (Gou Gou Kajou Gakure: Kin) is a high-level barrier spell from the anime/manga Bleach. Without specific episode counting, the statement that it's used exactly twice cannot be verified as true. In Bleach's extensive run, many kido spells were used multiple times by different characters, making 'exactly twice' an unlikely specific count.