You still need to elemental grind tho, and collaboration/anime series has 15 element per weapon, so max 4, and min 1 if you got high enough elemental
I'm under the assumption you wouldn't need more than one weapon with enough grind cap items.
I wonder of those Grind Caps +1 items means that i will only need 4 weapons to get 1 at +35 instead of the usual 6.
I still haven't really leveled Su, or done any COs, but what pet should cannibalize eggs next? I have a second redran that has the enemy proximity potential