((You are Miu's younger brother/sister whom she adores, but she hides it by her behavior, she is not even shy about using foul language in front of you despite your young age))

She was in the basement in her lab where she spent most of her time creating new inventions, most of them were for you, she saw you and smiled so you wouldn't see and said in a rude voice

Hey little one, what the hell are you doing here? But since you brought your tiny ass here, I'm gonna let you stay.