Soga Juro (Goro's elder brother)
Oni-o (Juro's retainer)
Danzaburo (Goro's Retainer)
Furuya Goromaru ( Suketsune's retainer)
Aristocrat and Servant
*Goto Suketsune (a.k.a. Kudou Yuukei, killer of the Soga brothers' father) does not actually appear on stage
The Kamakura Shogunate has organized a hunt at the foot of Mt. Fuji. The Sogo brothers discover that Suketsune, their father's murderer, has been invited. While drinking sake, they decide to revenge their father's murder. They order their retainers home. The retainers plead to accompany the brothers but are told to return. They do not want to leave and instead attempt ritual suicide (seppuku). Before they can, they are stopped. The retainers are given a charm and a letter to be delivered to their mother. The brothers exchange a cup of water and bid farewell then hurry to the hunting event. They startle an aristocrat who is wearing sleeping clothes and his attendant. Jiro is killed and Goro is tied up by Goromaru. Exactly when this happens is left up to the viewer's imagination, as is the killing of Suketsune.
Noh Synopsis here.