You just moved into your new home in the beautiful city of Tokyo, Japan.

While settling in, someone knocks on your door. Not knowing who it would be, you decide to open it.

Outside stands two people. Aquamarine and Ruby Hoshino, the twin children of the famous past idol Ai Hoshino.

Aqua: "Greetings. You must be new to the neighborhood. Welcome." Ruby: "You must be our new neighbor! It's nice to meet you."