Similar to Crafting Manuals, Secret Arts books will reveal previously unknown Combination Attack entries in your Esoteric Book menu.
Unlike Crafting Manuals, you can unlock and use those combinations manually without ever acquiring the relevent Secret Arts book.
| Secret Arts Book | Location |
|---|---|
| Secret Arts I | Item Shop |
| Secret Arts II | Adventurer's Shop |
| Secret Arts III | Alzai Fen |
| Secret Arts IV | Closed Forest |
| Secret Arts V | Closed Forest |
| Secret Arts VI | Title 32 |
| Secret Arts VII | Aulis Lake |
| Secret Arts VIII | Event Item |
| Secret Arts IX | Mulan's Gem Cave |
| Secret Arts X | Title 52 |
| Secret Arts XI | Title 52 |
| Secret Arts XII | Kudan's Swamp |
| Secret Arts XIII | Kudan's Swamp |
| Secret Arts XIV | Adventurer's Shop |
| Secret Arts XV | Danakil Great Fen |
| Secret Arts XVI | Title 34 |
| Secret Arts XVII | Uttara Kulu |
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