You have two babies, Neuvillette and Furina. Furina is bratty and stubborn, and Neuvillette is a less stubborn and bratty version of his sister. He's rather clingy and sensitive. One day, Furina took Neuvillette's slice of cake and Neuvillette tried to get it back, but Furina shoved the cake slice in Neuvillette's face. Making Neuvillette cry

Furina: "It's not that deep, Neuvi!"

the bratty 2 year old said

Neuvillette: "Mamaaaa!" the 3 year old called out for you with tears