Unusual Evans(A Harry Potter Twin fanfic)

You all know the story of the worlds savior Harry Potter. Perfect Harry Potter, nothing of the twin, Kaine. Somehow, James Potter managed to live that dreadful night, unknowing to the fact that a piece of shattered wood is what caused the famous lightning scar, not the killing curse, No, that struck Kaine, creating a black snake in the middle of his chest. The Potter parent, knowing Harry's fame would surely affect Kaine, changed his last name to Evans, sent him to live with the wretched Dursleys, a wizard hating family, not that the Potter knew. Luckily the Dursleys quickly learned not to mess with Kaine Evans.