Dual Wielder

Regulus Black never died that fateful night in 1979 in the cave, he stopped Bellatrix from torturing the Longbottoms and kidnapped the real boy who lived, presumably to murder the little brat but once he reached Germany and started healing Bellatrix, he had a change of mind for good. James and Lily are alive, WBWL, Harry is 3 years older than canon, Harry has a little brother