Sir/Ma'am where can i find Charcoal, Cedar Spear, and Centipede poison? please reply ASAP

Kill the little roaches in Sakurujiama (NOT GIANTS)

Contrary to what he said poison does not come from the creeper ants in Sakurajima dungeon. Not sure where it is but those ants don't drop them. And cedar spear is lv 10 just farm for the ??? weapons that give weapons around that lvl. Charcoal I have no clue.

I lied it does come from the big creeper ants

you can get Charcoal from a monster called Akamekabe.
you can look at the details for them here
http://onigiri.wikia.com/wiki/Akamekabe