User blog comment:MeDeoPal/On the Origin of Titans and Shifters/@comment-24657413-20140904053725/@comment-178.223.51.167-20150422001720

Actually eren dad gave eren DNK of titan so he can turn into titan,after that he let eren eat him so he will be human being and not like ymir which was walking around in titan form 100 years until she ate marcelo,reiner and bertholdt friend..