If you seriously want to talk about a series I never thought I'd be into for the porn, here you go. I was scarred when I hunted the internet for someone else who wrote in this fandom like you, and have since decided that it's a Keelywolfe-only fandom for me, lol. My first and favorite of your series is the human series, but this one is growing on me too, quite a lot.

Also, bottom!Optimus is surprisingly hot. And I can't believe I just wrote that.