Don't Stop Muscle Training

Trying to repress your sexual urges for your beautiful Onee-san by working out, which in turn only adds fuel to the fire that is her muscle fetish and ends with non-stop vanilla sex...
“We don't make mistakes, just happy little accidents.”
-Bob Ross

Page 2, I can stare at her all day.
Mizuki is an example of textbook perfect Onee-san. Short hair with a little braid with a ribbon, good lord ❤

Did she just call her step-bro's pecs....boobs?

Huh... Misa Wasabi's works typically feature anal.

We're all gonna make it. I cannot unsee it.

Needs the Short Stack tag

I wish lifting weights would be enough to suppress Earthly desires. A pussy like that is tempting enough to persuade anyone.

That was great.

Accept the fact, Kazu-kun, that you've upgraded from "Little Brother" (even if it's the "Step-" variety) to "Lucky Bastard", and lover of a Sexy Onee-san (Mizuki-nee).

"Do Not Resist or Hold Back ... IT IS YOUR DESTINY! 😎

Bulking up in order to keep your urges for your sexy onee-san in check only for it to backfire cuz your nee-chan has a muscles fetish and thus wants to touch you more. That’s the best backfire ever!