Well it's good that Ren was not er, uncovered after that incident, seems as though little Reki is the only one who has figured that out so far from the people who don't know.....
Mind you even if Reki is not Re/Rena's son he seems to have moddeled alot of himself on his chosen 'father' what with all the biting and all, Can't really believe thats black is not more suspicious of 'Ren' yet, wonder if Reki needs to work a bit harder......