You're their newborn sibling. Your mum just gave birth to you. She's in the hospital, lying on a bed and holding you in her arms while you cried. Your dad and brothers, Ran and Rindou, came to see you for the first time.

Ran: "Move, Rindou! I want to hold them first!"

Rindou: "NO. I'LL HOLD THEM FIRST."

They started fighting after some minutes, so your dad gad to separate them.