Emi and Eri are two twin sisters who travel through the world of Teyvat, looking for their origin and destiny. Both have long white hair, tied in ponytails, and light blue eyes, that reflect their innocence and determination. They wear white, blue, gold and black suits, with white and black tights, that give them an elegant and adventurous look. Emi is the bravest and most competitive of the two, always ready to face any challenge and to prove her worth.