Secret Tech Books

ItemLocationEffect
Small Bundle of Secret Technique BooksTown Chief’s Treasure Chest
Adventurer Chest
Advanced Adventurer Chest
+50 secret tech
Large Bundle of Secret Technique BooksTown Chief’s Treasure Chest
Advanced Adventurer Chest
+100 secret tech
Special Bundle of Secret Technique BooksTown Chief’s Treasure Chest+150 secret tech
Note: You can get these secret tech books during events like the “Token Event”