This was inspired by a comment left on this post, the comment being "Tetsuko-sama getting turned on by her own muscles is perfectly fine!"
Putting aside the fact that that's not actually Tetsuko in that post (it's the same "random muscle heroine" featured in this post from waaay back in December!), the sentiment is still valid, so that's what I based this pic on. Now, I have no idea whether Tet-chan actually gets aroused feeling her own muscles (I know she gets aroused when others feel her muscles), but hey, makes a cool illo, ne?
Uh oh... looks like Patreon took away the ability to put download links in posts! (Unless they've hidden it where I can't find it... to paraphrase Dr. McCoy from Star Trek TMP, "You know software engineers, they love to change things!") So right-click on the pic and download it that way, I guess.
(ETA: I wanted to do a third version of this pic–wherein Tetsuko is licking [redacted] off her bicep–but Patreon would most likely give me a lot of grief about it.