The pyrotechnician with extraordinary talents and owner of the "Fires of Naganohara" shop is a Pyro character and before unleashing her might on the enemy you will first need to upgrade the character a little. Here is the complete list of the materials needed for Yoimiya.
Complete list of Materials used by Yoimiya in Genshin Impact
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bxakid
If you're looking to upgrade your Yoimiya here is the complete list of the materials you'll have to farm to Ascend the character and her talents.