Rei Kiriyama is a child prodigy. Rei Kiriyama is also an orphan who lives alone in an empty apartment. Rei Kiriyama is a teen working in an adult's world. Life is complicated for Rei. He's an up-and-coming shogi player on the verge of turning pro, but he has no homelife, or much of a life period, outside his board game, but thankfully with the help of some life-long friends he has an opportunity start all over again.