If he learned everything necessary at the start then he could theoretically learn "nothing" afterwards like a boss (although just playing gives experience which i count as learning)
heyy can you please update [210811][ナッツが主食] JKボクサー凛香と復讐の地下リング Ver1.1 [RJ325990], there is a newer version of the game, it gives the game an english translation, thank you