Sanpaku (三白) is a Japanese term meaning "three whites". It is generally referred to in English as "sanpaku eyes" and refers to eyes in which the white space above or below the iris is visible. Volume 1: The Story of a Girl With Sanpaku Eyes Volume 2: The Story of Noticing the Girl With Sanpaku Eyes Volume 3: 4-koma Volume 4: Extras (Source: MU)