At The End Of The World, I Still Want To Be With You summary:

“Even if the world ended and you were the only woman left, I’d rather date this waiter!”Just as Nuowan said these words, the apocalypse hit!? When he wakes up, there’s a male waiter by his side… Senyu. And although Senyu’s survival skills are invaluable, he keeps kissing Nuowan out of nowhere! Is he a post-apocalyptic hero, or a kissing demon? Can the pampered young heir and the OP waiter peacefully live out their days at the end of the world?