New/return kitty!

So my family has two cats, and a we used to have five when my older cat had a litter, but we got rid of all but one...until now one has been returned to us from my brothers finances family. Lon story short, this tiny little grey kitten the size of my palm has grown to be this...large, very nervous, awkward but cuddly feline...who hasn't warmed up to his mother or sister...and also doesn't like being petted on his tummy like his sister...but we'll fix that;) all our cats are like dogs so he's gotta change his cattatude.
And I'm moving higher up on he forever alone scale...
Woopee!

Wish us luck, Lizzie

P.s...cat jealousy may be rising...