Here's how it goes.
The female lead's online boyfriend is an angel.
But he's an angel from the Old Testament: three pairs of wings, vast enough to blot out the sky, countless eyes, all-knowing and all-powerful, chaotically neutral, terrifying and blood-soaked...
...and he gets jealous easily.
"...I really don't like him. Put the knife down, please QwQ."
"Oh." The archangel holds the knife to the other man's neck, his expression cool and indifferent. He refuses to listen.
By day, he's a handsome man, aloof and holy as snow.
To everyone else, he's a vicious, cold-blooded mastermind and a machine that enforces the rules. But when he feels slighted, his inner self comes out in a way that seriously lowers your sanity. His daily routine is dealing with traitors in various worlds and coaxing his girlfriend (.
"Heretic." He says it coldly, then raises his voice.
"The Lord will forgive you." Then he smashes a planet to pieces.
"...You."
While working, he can't help sneaking a glance at his girlfriend.
His girlfriend, who has watched the whole thing, quickly sits up straight and tremblingly raises a sign: I'm, I'm useless ovo
After a moment of silence, the archangel acts as if nothing happened and goes easy on them: "Next."
When he feels insecure and jealous, he hides.
In the middle of the night, he silently makes his way to the female lead's bedside and stares at her. Looking pitiful, but with an angel's face, he says gloomily, "Do you like this world? I could conquer it and give it to you."
The female lead, jolted awake in the middle of the night and half dead with exhaustion, makes a face of pure agony: ...
Then she takes a closer look and sees the terrifying sight of countless tentacles blotting out the sky behind the handsome angel-faced man. She nearly cracks on the spot.
Female lead: It's bad enough having to deal with all this pressure during the day. You have to bother me at night too?
She earnestly tells her boyfriend, who doesn't have to worry about early-morning classes, "Look at the time. Stop being clingy, darling. Go to sleep."
At this point, the female lead can still leisurely date her boyfriend, until one day the Special Affairs Bureau comes to her door, says she has violated Article XX, Clause XX, and solemnly concludes:
"Either you choose to be arrested, or you choose to join us."
Female lead: ? I was just wondering where to find a job to put food on the table, and now one just fell into my lap?
She promptly chooses the stable government job. Their friendly, cooperative days continue until the Special Affairs Bureau discovers that monsters are invading the world. They panic and prepare to hold a global meeting to discuss how to fight them, only to stumble upon the monsters kneeling before the female lead in tears, confessing their crimes:
"Honored lady, we were wrong. You can do whatever you want to us. Please, have mercy and spare us!" Please keep your boyfriend in check, or he's going to slaughter everyone!
Everyone: ...I don't belong here. I belong under the car.
After learning the identity of the female lead's boyfriend, everyone grows even more anxious:
For the sake of Earth, whatever you do, don't break up!
↑ That's the story.
An all-knowing, all-powerful, cold and ruthless archangel who acts adorable only in front of his wife x an optimistic, cheerful, useless cutie who just wants to laze around and occasionally get her act together
Light fantasy with a touch of horror and Lovecraftian elements. Mostly, it's two idiots being sickeningly sweet with each other (no).
The male lead isn't actually the angel described in the blurb, but the girl misunderstands, so he just plays along. Basically, the girl goes off to play a live-action RPG adventure game, while the male lead has her back and acts like a lovesick stalker husband all day!
Theme: Be careful dating online. What if the person on the other end isn't human?