InuYasha also romanized as Inuyasha, full title InuYasha, A Feudal Fairy Tale is a popular manga series written by Rumiko Takahashi. The story centers around a time traveling middle school student and her friends (a half-demon, a lecherous monk, a young fox demon, a demon slayer, and her nekomata companion) in the Sengoku Period who seek to restore the Shikon no Tama and keep it out of the hands of the evil Naraku. The series is named after one of the main characters, InuYasha. The name "InuYasha" means "dog spirit". Inu is a Japanese word meaning "dog". Yasha is a Buddhism-related word meaning "spirit". Otherwise his name would be "Inuyokai". "Yokai" means demon.