methods of getting level 30 charm?

My method? Kenta PQ all the way. Clearing each run gives you 26 charm. That's 260 per day. Add that to the soloable zakum if you can, and then Orbis PQ, for 20 charm each PQ.

also, NX super sales help, like that 99 nx one, OR free hair/skin/eye coupons. If you don't want to use those fancy coupons on your beloved hair/skin/eyes, just get an android and use them on it, from the Henesys npc.