[Minaka Shoubu] Kyuuketsuhime no Himekishi Kansatsu (2D Comic Magazine Futanari Nyoudou Sanran Shasei to Sanran to Mesuiki Acme Vol. 2) {Hennojin}

Imprisoned in a vampire's dungeon, a loyal knight rattles her chains and wonders what her cursed captor could possibly be planning — and the answer tears straight through her armor. Tentacles stretch and reshape her body from within, stuffing her womb until something round strains visibly against her stomach while a throbbing new length swells between her thighs, then milks her mercilessly as she hangs suspended, wriggling and squirming. What remains is a drooling, ahegao-wrecked mess begging to cum, so blissfully broken that when the vampire finally asks for her hand in marriage, all she can do is moan yes.