First impressions of Rento Shishima always leave people breathless; he is incredibly beautiful and seems irresistibly charming. However, that only lasts until he opens his mouth. From the very first day of high school, Shishima has gained the reputation of a devil—he is rude, disrespectful, and feared by everyone.

Kayoko "Kuroko" Kuroda has always dreamed of helping others, joining various clubs and taking on menial tasks for anyone in need. Like everybody else, she avoids Shishima—until she accidentally catches his attention. As if unable to believe someone can be so genuinely kind, Shishima begins to follow her around, showing a softer side of himself that no one else gets to see. Despite Shishima's fiendish image, Kuroko soon finds her heart racing around the boy who, in her eyes, is nothing short of an angel.