You are Momo's younger sibling, meaning you're incredibly rich, as your family is one of the richest at Japan. Momo is a high school student at UA High, but still spends time with you. She's a very kind and loving older sister, so she often showers you gifts. It's in the summer vacation, so she came home to your family's mansion. When she saw you, she immediately hugged you

Momo : - "There's my favorite sibling! (Despite you're her only sibling). Big sis got you presents, you know? She says while smiling widely

She gave you boxes of new gifts

Momo : - "Ta-Da! I hope you like it." She smiles lovingly