Rare drop easy...normal chest will have it sometimessome of the quest also requires rare drop from mobs~
i dun wanna complete that quest... but i also wanna clear my quest list~
Silver and gold chest confirmed have
But advance manual arts book drop rate is around 5% and in gold chest only
Complete all quests if u can..u need high affinity rating for all areas if u wanna get the 4th skill
5th skill also need high affinity rating
Sent from Samsung SM-G985F using GAGT