In JJK With Naruto Powers - Chapter 234: Rinne Tensei

The cold wind howls across the Northern Wilderness, and Louis Calvin tightens his wolfskin cloak, standing alone atop an ice cliff.As the son of a Duke, he was thrown into this perpetually frozen wilderness under the guise of 'pioneering glory.'When he thought he was at a dead end, the Daily Intelligence System activated:[Thirty-seven ice-bound hungry wolves are lurking in the southeastern valley, planning a raid on the territory tonight.][At dawn, an Ancient God's corpse will emerge from the Ice Lake, with its heart retaining the godliness of winter.][The Church of Gold Finch will deem you a blasphemer, and the Holy Flame Knight Order has set out on a northern expedition.][A tide of the undead will sweep across the continent, with humanity's numbers dwindling to less than a million.]...

[By the Author that brought you “Martial God Regressed to Level 2” & “The Swordmaster Who Returned After 1,000 Years”]A year has passed since the world turned into one ruled by hunters, and suddenly, I awakened.But that’s not all.I possess an extra status window that even includes a built-in strategy guide.

Dumbledore always believed Voldemort was the greatest threat to the wizarding world until a thousand-year-old vampire showed up at Hogwarts with the deed in hand—“A thousand years have passed, and Hogwarts' lease is up!” said Dracula. “Headmaster, you wouldn't want your students to be homeless, would you?”“What do you want?” Dumbledore asked gravely.“Anything interesting.”“Well, I think the position of Defense Against the Dark Arts professor is quite interesting!”...And so, Hogwarts gained a professor who couldn’t be dismissed.McGonagall: “Albus, I don't think Professor Dracula's teaching is suitable for the poor children!”Dumbledore: “There's nothing I can do, no one can fire him.”...Draco: “My father is a governor, I'll have him get you fired!”Lucius slapped Draco on the head, “Mr. Dracula, Draco speaks without thinking. Please, don't fire the Board of Governors!”...This is the story of a vampire who lived too long and found amusement in the wizarding world out of sheer boredom.

The age of darkness has arrived.