[Neko wa Manma ga Utsukushii (Hisasi)] I Got Blackmailed by a Gal -Extra Book- [RedLantern]

Model student Ookawa Satoshi never imagined the school's most popular gyaru, Matsukawa Mei, would hold leverage over him, and the blackmail has spiraled into a habit neither of them wants to break. Pressed against a chain-link fence where anyone could stroll past, the big-breasted gal whimpers that someone will see them even as her hips keep moving on their own, riding her blackmailer with an enthusiasm that embarrasses her more than the act itself. This extra entry in their ongoing story dangles the question of whether Satoshi's feelings for the heroine are passing interest or something like real love.