In , Episode 4, " The Nijimura Brothers, Part 2 ," the battle moves inside the derelict Nijimura residence as Josuke Higashikata attempts to rescue a critically injured Koichi Hirose. This episode is pivotal for its introduction of the Bow and Arrow 's significance and the debut of two iconic Stands: Keicho Nijimura’s Bad Company and the initial stage of Koichi’s Echoes . Key Plot Developments Echoes - JoJo's Bizarre Wiki