Michi Tange made this BL series that’s like a full on modern yaoi version of Joker Game, but with hotter guys, and I’m so here for it. It’s finally available on Kindle Japan through Birz comi.
(Yes, you’d have to get an Amazon.jp account and read books on their Kindle for PC – but its worth it.) There are scanslations, but only up to chapter 4 afaik
Guns, Guys, & Yaoi 2.0 