Hellfire Butterfly is a Five-Star material in Genshin Impact. It can only be obtained by completing the Trounce Domain—Narukami Island: Tenshukaku II and defeating Signora. This domain is unlocked by finishing the Archon Quest Chapter II, Act III Omnipresence Over Mortals.
To access level II of this domain you have to be at Adventure Rank 40 and is recommended to have your party at level 70 or above. It is located in Inazuma City on Narukami Island.
After you have defeated Signore, you can only collect rewards once per week by using 30 Original Resin to open the Ley Line Blossom for the first three Weekly Bosses, and 60 Original Resin subsequently.
Hellfire Butterfly is one of three Talent Level-Up Materials you can obtain from this Trounce Domain. The other two are:
Due to Hellfire Butterfly being a Talent Level-Up material, only certain characters use this material, but more may be added in future updates. At the moment, only Kokomi and Thoma use the Hellfire Butterfly.
A warped shard that houses great might. You obtained this from defeating Signora, who unleashed her original power.
The seal of ice was broken under duress, and as her former will surged forth from its pale white prison and she remembered her old name once more, the undying butterfly danced amidst burning flesh and blood. And she remembered her past, wandering the land, spreading the flame, burning away all evil — and she recalled the face of the person she could never meet again.In-Game Description
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