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.

Natsume Shiranui is a high school sophomore who has the face of a thug. Intimidating, yet wholesome, he holds affections for Natsume Minadzuki, his beautiful and popular classmate, as he admires her because she's always been there for him, himself aiming to become, for her, every bit the hero she already is for him.A story of two Natsumes.(Source: MU)