Plot: Lei Lingyun is willing to help Heimu defeat all Chinese chess players, on the condition that Heimu defeat all Chinese chess players, including the "chess master" Fang Sheng, and force them to make a contract that they will never play chess again after losing, because he wants to become the "Chess Master" in the Chinese Go world. Kuroki said that Lei Lingyun was mean, and asked Sasaki not to deal with him