We have 2 cheats and tips on GBA. If you have any cheats or tips for Tennis no Oji-Sama: Genius Boys Academy please send them in here. You can also ask your question on our Tennis no Oji-Sama: Genius Boys Academy Questions & Answers page.
Complete the Ranking Tournament the indicated amount of times to unlock the corresponding character.
Inui:
Complete the Ranking Tournament 1x.
Echizen Nanjirou:
Complete the Ranking Tournament 2x.
Sakuno:
Complete the Ranking Tournament 3x.
At the 'Title' screen press Up, Up, Down, Down, L, R, L, R, B, Select to unlock 'Max Guage Speed' in the 'Option' menu.