Hadrian Arthur Slytherin Riddle

AU that follows canon. Tom never made a Horcrux : his sanity was more important. He knew battles weren't won only by power. A sane Lord Voldemort makes a mistake, but is it really ? It leads him to adopting Harry Potter, forgotten by his family. Hadrian Riddle was born. Dark/Grey!Slytherin!Harry. (Warning : I don't have the talent of the people on this website). Pairings (?).