Masao Murasako is one of the villains in Shiki.
A 17-year-old villager. He's friends with the Mutou family (especially Tohru) and despises Natsuno. He lives in Sotoba with his family, The Murasakos.
Masao is an insensitive, cowardly individual who has a childish demand for everyone's attention; his sister-in-law notes that he dislikes his nephew and niece because before their birth, Masao was always spoiled by the family but now the children receive the attention.
He's bitten by the Shiki-turned librarian of Sotoba and also becomes a Shiki.
After ResurrectionOn the night of the start of the revolution of the villagers against the Shiki, he begs to Megumi to run away with him, and Megumi immediately refuses, nothing that he only wants her to come along in order not to be the only one who disobeys the Kirishiki's orders.
In the anime, Masao, during the time of the human mob, attempts to run to his sister for cover, yet she beats him over the head with an iron pole and then proceeds to stake his chest.
In the manga, Masao tries to seek refuge as the shiki extermination continues. After he first thinks about his father and brother, he concedes that only his sister will help him. When he arrives home, he pleads to her niece to allow him inside. Thinking she is alone, he plots to feed on her and his family, thinking he can assume control over them. As he enters the house, Chizuko incapacitates Masao after she trows a cleaver at his head. As he lays hurt, Chizuko reprimands him as she proceeds to stake him.
- Masao's english's voice actor is Todd Michael Haberkorn, who is the voice of Keroro from Sgt. Frog, Death The Kid from Soul Eater, Natsu Dragneel from Fairy Tail, Allen Walker from D.Gray-man, Tsukune Aono from Rosario + Vampire, Sugou Nobuyuki from Sword Art Online, and Jack The Ripper from Case Closed: The Phantom of Baker Street movie.