the third child

Lumine and aether have a sister. her name? Lucia (lu-cee-a). she is like her sibling a traveler jumping from world to world with her siblings. their triplets . So when her sister and brother get taken away and she stranded on teyvat she has to deal with people she doesn't know. After several years and a few months, she has been granted the ability to wield the elements and has friends. engaged to albedo. she will find her twin siblings but first, the mishaps and adventure will come.

(this will being during Klee dodo king event and people will be aged up)