"Will you become my husband?"
On the underground city's sixteenth-year matchmaking day, Bai Che stares blankly at the empty matchmaking hall. His mind is stuffed with chuunibyou memories from the 2000s, and they've brought him down from a prospective Class A citizen to a Class B "problem youth," someone girls steer clear of. Just as he thinks he'll be exiled to the surface, a petite, frail girl comes before him and speaks those hollow words.
The glass screen clearly reads: [S-Class / Seriously Defective / Infertile]
This girl, who should have been at the top, has fallen from the S-Class matchmaking event all the way to him because of a fatal flaw.
Seeing her struggle to hold back her tears, Bai Che, who has spent both his lives alone, feels his heart stir.
"Yes."
He has no idea that this decision will turn the hand gripping a weapon into a blade that cleaves open the apocalypse.
For the sake of the "defective" girl in his arms, who is destined never to bear children, he will overturn the rules of the entire underground city.