Firefly Variant: One Unlocks a Path, the Other a Core

When the daughter of Kevin and Mei crosses from the Previous Era into the Current Era and arrives in the Honkai: Star Rail universe... When Firefly meets another version of herself who looks exactly the same... When the scheming little Firefly becomes the beloved of everyone in Honkai Impact 3rd and Honkai: Star Rail... When Firefly unlocks her Path and accidentally cheats her way into stealing Kiana's Herrscher Core... Kiana: “? Where's my Herrscher Core??” Firefly: “Another me... in this world?” Stelle: “I have two wives?” (Everyone dotes on her + Firefly's coming-of-age story + a little harem + alternate-self romance. Firefly is the main pairing; canon pairings may be broken up, so proceed with caution if that bothers you.)