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.
- **Won the 4th Manga Taisho Award in 2011**
- **Won the Kodansha Manga Award for General Manga in 2011, which it shared with Space Brothers**
- **Won the 18th Osamu Tezuka Cultural Grand Prize in 2014**