Mashiro Mai attends Hae Academy and is a member of the Swimming Club. She is very beautiful, popular, and has a cheerful personality. She has short blue hair, violet eyes, and is busty-petite. She is in the same class as the protagonist, Tomohiro Machiya. Not much is known about her past.

She has feelings for Tomohiro, as she takes his first kiss and tells him she is still a virgin after he records their first video.

Not much is known about her past.