Hades Is My Good Boy

Ordinary priestess Eve sneaks into the Underworld with an obedience potion for an oracle. She thinks she tames Hades, Death Lord, into her obedient “puppy”, bossing him for six months. She learns the potion only worked one day; for 179 days, he was sober, playing along to keep her. Eve flees at night, but Hades corners her: “Master, I’ve given you my divinity and life. Where are you going?”