3D Kyle
When mom once asked Kyle what he wants to become in the future when he grows up, he instantly replied he wants to become a demon girl and he wants to have big boobs XD
On his next birthday mom bought him a surprise gift, his first nanotech package to start a little melon farm on his chest. Boy, was he happy!
Anyway, time is flowing, boobs are growing. But nobody expected they would grow so well!! A real masterpiece, according to everyone, and Kyle did take a super good care of them. Never wore a shirt since that bday to make sure they get a lot of fresh air XD
3D Helen Surely the rest of his body needed to be shaped accordingly, so he took a lot of care of his waist as well, getting tips from his sis Helen who's a pro at tight-belting and a wasp queen. But also has the opposite kink and likes zero boobs on her chest XP She likes Kyle's boobs though because they look good on him XP