Late in the afternoon, after working hard without even having a meal, Yoo-Jin finds herself walking into a supermarket she’s never seen before. Just as she was about to turn away because the instant food didn’t look very good, the elderly supermarket owner appeared and handed her a strange seasoning packet for free, saying it was on the house. Thinking, “Since I got the seasoning for free, maybe I’ll cook something for a change,” she ambitiously sets out to make a rolled omelet. But the moment she adds the seasoning to the nearly finished omelet, boom! Thick smoke fills the air… and out of the smoke, instead of a rolled omelet, a human rolled omelet (?) stumbles out. And the rolled omelet says…
“Are you my master?”
Yu-Jin unexpectedly finds herself living with the rolled omelet…(Source: Ridibooks, translated)
— Description from AniList community (anilist.co).