Color Changeカラーチェンジ; Color Change; Colour Change; 気分で髪色が変わる女の子の話; Kibun de Kamiiro ga Kawaru Onnanoko no Hanashi; A Story About A Girl Whose Hair Color Changes Depending On Her Mood

Nijimi-san is an ordinary high school girl, except her hair changes color based on her mood. Her classmate has cataloged most of her color changes, but theres one color which is still a mystery to him