His vassal, Yuranosuke OBOSHI, leads a life of debauchery in Gion, a red-light district in Kyoto, and he attacks the Ko residence when Moronao, not anticipating revenge, lets his guard down.
家臣の大星由良之助は京の遊里祇園で放蕩三昧の日々を送り、絶対に仇討ちは無いと師直側が油断したころに高の屋敷への討ち入りを決行。