Kumasaka (The Robber) is a Noh play from the 15th century. Arthur Waley attributes it to Zenchiku Ujinobu and it concerns the notable Heian period bandit Kumasaka no Chohan.
The play takes the form of a dream-time Mugen Noh.
The samurai hero, Minamoto no Yoshitsune (known in his early life as Ushiwaka) had a series of encounters attributed to him in his youth, one of which concerned repelling a bandit attack led by Kumasaka. Kumasaka is sometimes identified as the slayer of Yoshitsune's mother.
A travelling monk is offered shelter by another, on condition that he prays for an anonymous soul buried by a pine tree. The traveler is surprised to see a large pike hanging on the cottage wall, and the other reveals his past as a robber before vanishing. This reveals to the priest that "It was under the shadow of a pine-tree that he had rested".
Thereafter, the robber reappears as the ghost of Kumasaka and recounts the story of his last fight and his death at the hands of Ushiwaka: "The wonderful boy...be he ogre or hobgoblin".