A youth named Kiriyama Rei, who lost his family as a child, endures loneliness to become a professional shogi player. Then, through a chance meeting, he develops a relationship with the three Kawamoto sisters (Akari, Hinata, Momo), who hail from a working-class district of the city, and little by little his frozen heart begins to thaw.
Note: Nominated for the 2nd Annual Manga Taishou in 2009 and won the award in 2011.
Won the Kodansha Manga Award in the general category (shared with Space Brothers) in 2011 and won the Grand Prize of the 18th Tezuka Osamu Cultural Prize in 2014. And won the 24th Japan Media Arts Festival Awards Grand Prize in 2021