Arms Overhead, Abs Exposed - Bound Anime Muscle Jocks Tickled On Ribs, Belly & Tummy

Every one of them signed up for the torso endurance test, and not one of them lasted. Strapped upright to padded frames, arms hauled straight overhead and buckled off, bare chests and stomachs stretched tight with absolutely nothing left to guard. Then the motorised brush wheels roll in. Spinning bristles track slow and steady across their ribs, dig into their sides, work over the flat of the belly and back up under the arms - denting the skin, never lifting off, never speeding up and never letting go. The jocks twist against the straps, arch, kick out and laugh until they cannot get the air back. Hand-drawn 2D anime bara animation throughout - thick line art, flat cel shading, big muscular young guys, and no real people anywhere. Twenty-three scenes, every one a different room, a different rig and a different angle.