Try Again, Sangonomiya Kokomi

For once I could find the artist I used to create the cover! It's "Orri"on Twitter!
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400 years ago, Her Excellency the Divine Priestess of Watatsumi island was killed by a member of the Tenryou Commission. In present day, Teyvat is one united country, filled with diverse cities; including Narukami, where a reborn Sangonomiya Kokomi resides with her family. Kokomi has a normal life, as any teenager in 2022 would have. She's an excellent student, she's got the best friend in the world, and she's a miko at the Grand Narukami shrine. One night, as she's helping the other shrine maidens with their tasks when she finds herself isolated and in the presence of an abyss mage. But that's impossible, they died out over 300 years ago, didn't they? Kokomi finds herself able to access her past self, and fix scars left in Teyvat's history. She may not be able to change the course of a war, but she can repair a relationship. Only problem? She can't get killed this time around.