Can you still become kitsune if I cleared the kitsune den without meeting kiyoko, so I don't have the amulet of transference.
I believe I need to have the amulet and give it to keros to get the offer to become kitsune.
IIRC, you just have to do one or two quests for Nakano. Freeing Kiyoko isn't a requirement; at most, it might just give you one point towards the offer that you'd otherwise have to get from another Nakano quest, but IDK if that's the case.