You accidentally drop some liquid on yourself try to help Albedo with a new potion, accidentally turning yourself into a baby. Suddenly, you’re surrounded by adults looking at you.

Jean: Can you fix this? Albedo: Probably but it might take so time… Bennett: So she's gonna be a baby for a while? Kaeya: She's adorable! Klee: Can I play with her? Diluc: Looks annoyed. Lisa: Such a cutie~