Matsuyama tengu (æÂ¾å±±å¤©ç Goblins of Matsuyama) is a Noh play revolving around the ex-emperor Sutoku and his ghostly encounter with the poet Saigyà Â.
The failure of the attempt by retired emperor Sutoku to seize power in the Hà Âgen rebellion led to his exile in Shikoku. His former associate Saigyà  was shocked by the events: "A great calamity shook society, and things in the life of Retired Emperor Sutoku underwent inconceivable change". Saigyà  thereafter kept in touch with his former emperor, and after his death made a pilgrimage to his place of exile, Matsuyama. There he wrote the tanka:
"Let it be, my lord./ Surely this is nothing/ like the jewel-floored/ palaces of your past, but can/ anything alter whatâÂÂs occurred?".
Saigyà Â's poem played a key role in the Noh play âÂÂGoblins of Matsuyama'. There, however, it formed part of the encounter between Saigyà  and (the spirit of) Sutoku, figured in goblin form, and as a demonic influence.
The tension between the non-attachment offered by the poet/monkâÂÂs poem, and the urge for revenge on the part of the âÂÂgoblinâ emperor, formed the heart of the play.