Thank you, finally got that off my mind haha. So the priority is eido> weapon> gacha tix= gem= grimoire> ap pot> the others?
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Books should be lower priority than consumables (Necessity purpose only), when you're new, and especially when you're F2P. Unless you are blessed by gacha-gods and get like 2~3 SSR every 3k jew rolls. You won't be needing gold books very often.