Miu likes Ran-kun, an older childhood friend who lives next door. On the other hand, Ran-kun's younger brother, Ren, is a flirt and a womanizer, so he's not her love interest! But why has Ren come to help Miu when she's in trouble, said things that make her misunderstand, and recently been stirring up her heart?! The true nature of Ren is that he has a "dark" personality and will use anything to get Miu...!? A childhood friend love story with a dark and eccentric boy whose love is twisted!