a program of Noh play. later Kabuki ("Modoribashi" and "Ibaraki") and Bunraku puppet play ("Modoribashi" scene of "Zouho Ooeyama")
Summary; Watanabeno Tsuna, one of the Minamotono Yorimitsu's big four, went to exterminate Ibaraki-douji an oni which inhabited at Rashou Gate, Kyoto. Tsuna cut off its one arm but Ibaraki-douji flew away.
Akutagawa Ryuunosuke's short novel "Rashoumon" and also Kurosawa Kira's film "Rashoumon (IN THE WOODS)" (based on the Akutagawa's short novel "Yabu no naka") are different stories.

cf; "Ooe-yama", "Tsuchi-gumo"