2x11 - Hikaru no Go

Realizing that Hikaru is getting stronger, Ochi swallows his pride and decides to ask Akira for help. When Akira tells Ochi about the game Hikaru played against Su-Young, Ochi realizes that Hikaru is a serious threat and that three weeks might not give him enough practice. However, Ochi still doesn't understand why Akira is obsessed with Hikaru, forcing him to show Ochi the match at the Go Salon from two years ago, the game where Hikaru destroyed him!