Mimiru is an outgoing, determined and energetic player in The World. She meets Tsukasa and tries to befriend him, but fails to do so on her first and second tries. Although she doesn't give up, she tries her best to help Tsukasa and figure out the tragic mystery of The World. The player who controls Mimiru is a 15-year-old girl attending a High School. Mimiru is, as a player, deals with things in a cute way, which shines in her personality. She is a perfectionist which reflects on her character of Mimiru.