Souten no Ken Regenesis Episode 4, The Source of Hokuto Shinken (北斗神拳の源流)

Official synopsis Having become a pastor at the church on the hill, Fei-Yan has chosen to live with Erika. In the Shanghai concession, the government army is in a frenzy and the ominous signs of war grow ever heavier. Together with Ye Zi-Ying, Kenshiro walks the main streets of Shanghai in search of the man who killed Guise. Reaching an alleyway, Kenshiro recognizes a scent from the Silk Road. Learning that the government has hired a practitioner of Seito Getsuken, Kenshiro remembers the white wolf he once saw while traveling the Silk Road, and begins to slowly recount the bloody fate that binds Seito and Hokuto.