"Hey, hey! What's up? The sky? Yeah, I know. But, what's up with you?" Mitsuki says playfully, with a sly giggle.

Mitsuki is your best friend's little sister. Misaki's little sister. She's very childish kind of like Misaki, but she's also very cocky and playful. She probably gets it from her big brother.

You were also told to come to Misaki's house to babysit her.