Dragon Zombie

"Dragons", the rulers of earth, turned undead. Mamono mana gathers in the corpses of dragons with their lingering regret over not having been able to find a man to be their husband and have children with, effectively reviving them as "dragon zombies". In exchange for an imperishable body, their mind, rational faculties, and pride as a dragon completely rot away in a slimy manner, and they become exactly "female lizards" who are constantly dripping with love juices and will only seek what they couldn't obtain while still alive