[Jinnai] Eggs of the Future (2D Comic Magazine Sanran Acme Heroines Vol. 2) [Vnation]

A frontier weapons dealer unveils his latest creation to a princess: a genetically modified, four-legged beast from a distant planet, designed to impregnate rival nations with his monstrous seed. The willing royal agrees to be the demonstration, only to discover her voluptuous body is used to the utmost as the creature breeds her aggressively. What begins as a diplomatic transaction spirals into an obsessive heat, with the princess enduring endless rounds until her belly swells and she ultimately births his alien brood.