Pregnenticles: Earth Girls Inseminated

Modern day Japan. Earthlings make first contact with an unknown alien species from Mars. - The Martians have begun an invasion of the planet. - It begins by getting close to Earth's most powerful officials and - impregnating them with tentacles, making them allies. - A hentai takeover, not a hostile one; no blood spilled, but so much semen! - The Martians are thriving among us! We're just GIVING it away!