The Girl with the Sanpaku Eyes, Volume 1, Paperback/Shunsuke Sorato

Amane Mizuno is struggling with her social life. To her friends and family, she's a shy, diligent girl. But to her classmates, her face screams intense, mean and maybe stand-offish. So when Amane falls for her classmate Katou her whole world seems to get flustered and agitated.