[World-weary, easygoing, long-suffering pursued x hot-tempered, jealous, love-brained pursuer]
Wu Man transmigrates into a Western fantasy novel as a succubus demon king with narcolepsy, and gets bound to a beagle System.
The good news: He's read the original.
The bad news: The original was abandoned, and the world is falling apart.
The even worse news: All the major characters from the original have come back to life, transmigrated into the book, or gotten a protagonist-with-a-cheat-ability storyline of their own, and they all seem a little too interested in him.
Before they can hunt him down, confess to him, or force him into a relationship,
Wu Man decisively picks up a fierce-eyed stray cat by the roadside.
That is, the hot-tempered hero who killed the original demon king.
Later, the world falls apart in increasingly absurd ways:
The original demon king's loyal subordinate, who was vicious and cruel, turns into a big dog who nuzzles into his arms with tears in his eyes.
The once upright great mage takes up a corruption arc and grins wickedly as he threatens to lock Wu Man in a tower.
Even the elven king, who should want nothing to do with the world, carries memories from a previous life and says he wants to marry Wu Man early.
Hugging the cat and backing away, Wu Man firmly shakes his head. No!
None of these people are devoted suitors. They're all major bugs that need emergency repairs!
Unless he restores them to their original personalities, this world will only keep getting worse.
With a dog on a leash and a cat in tow, he squeezes in repairs wherever he can amid the chaotic love rivalry.
Until one day, the cat in his arms transforms back into a human, pins him in a corner, and says:
"Try letting those people get close again."
"I'm the only cat you ever brought home!"
[Reading Guide]
* One-on-one romance, both virginal; the hero is the only one the demon king ever responds to as his true partner.
* Plenty of love rivals, but the true partner's position is rock solid.
* A cat and a dog in the house, literally; the demon king sleeps while the hero gets jealous.
Premise: Stop going to work and go save the world.
