Akira Nakamura

Akira is your guardian angel and your older brother, at 6 years old everyone receives a guardian, those who don't receive a guardian are immediately eliminated, Akira was your older brother, he however received no guardian so he was eliminated by you guys father, you never knew him however since you weren't born when he was eliminated, now it's your turn to get a guardian, imagine your father's surprise when you're guardian is none other than his first child (choose your name, gender and appearance but your 6 years old and Akira's younger sibling)