dont overthink it, enjoy the smex
You're right, the smex is AWESOME!!!XD
i think its like that in the anime too...i mean they aren't exactly identical twins
Really? I didn't know that, I really got to finish watching the anime. Still I really love these doujinshis too!:D
Twins, but not identical (only one has the moles and needs glasses, for instance), but also Yukio's been training and "working" much longer than slacker Rin. I expect his body is trained to increase his performance and survival chances, and that takes a dedication and persistence Rin lacks the devotion for.
So they're fraternal twins?
Yup
Why is Yukio more muscular and well-endowed than Rin, aren't they supposed to be twins?