Woshisu (ウッシス) is one of the Eight Pillar Generals of Yamato and the main antagonist of Utawarerumono: Futari no Hakuoro as well as the secret main antagonist of Utawarerumono: Itsuwari no Kamen. He goes by the name of Raurau-sensei and is an author to many stories related to love between men.
He is jealous of his father's belief that Haku is the successor of humanity and utterly hates him for that.
Woshisu was one of the Eight Pillar Generals and famed for being a Taoist writer in his spare time, coupled with writing love stories between men as Raurau-sensei. But he was actually the one who killed the Emperor of Yamato and poisoned Anju, framing Oshutoru in the process which started the Civil War.
After Anju is returned to the throne he takes action and reveals who he is. He is the clone of Mito and claims to be the successor of humanity. After he steals the master key, he uses an Akuruka mask kept secretly by the Emperor as its power was too much to control. Woshisu attempts to revive humanity and end the current race but Haku defeats him, at the sacrifice of himself of using too much of the Akuruka's power.
He is actually a clone of Mito and the older brother of Anju and the nephew of Haku.