[Nagi Ichi] Hatsumei Shounen Touma! ~ Tetsuda Hakase no Gyakushuu Hen (Koushoku Shounen Vol. 11) (Fan Translated)

Boy genius inventor Touma finally lands in the clutches of the vengeful Dr. Tetsuda, whose multi-phase torture machine straps the squirming young hero down for a gauntlet of tentacled appendages, fluffy brushes, and suction devices that leave him gasping and dripping. Between phases, the mad doctor plants a forceful kiss on his captive while a jealous robot sidekick shrieks that it should be the one beside Touma-kun every day, adding a hilariously petty love triangle to the mad-science mayhem. With gloved hands, probing machines, and a relentless final phase targeting every sensitive spot, the little inventor is thoroughly worn down by the time the doctor's revenge runs its course.