Every region in Genshin Impact has a souvenir shop where you can spend Elemental Sigils you find throughout your journey. Elemental Sigils drop from chests and first-time domain clears, and you can spend them on specialty souvenir shops in each region. Curiously, Inazuma’s souvenir shop was never open to players, and you’d get a mention that they were simply out of stock.
This is because in-game, you would instead get to spend the Electro Sigils you’d find in Inazuma on the Grand Narukami
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