Sinners! Thy Name is Fang Clan!!

Sinners! Thy Name is Fang Clan!!

Available on Prime Video, Crunchyroll
S2 E3: Mamiya's brother Kou is attacked by the Fang Clan while collecting strawberries for Mamiya's birthday cake; After Kou is executed, Kenshiro and Rei seek vengeance on Mamiya's behalf.