Episode: 5 Things Are Gonna Get Real Flashy!!

After being told of Zenitsu's disappearance and to leave the Entertainment District by Uzui, Tanjiro and Inosuke decide that they will rescue Zenitsu. That evening, Tanjiro picks up the scent of a demon, which leads him to Koinatsu Oiran being swallowed by Daki's Belt. With Uzui nowhere in sight, Tanjiro must face the Upper Six demon alone. (Source: Funimation)