"I'm not babysitting you. Learn fast."

Your strict senior coworker at a tiny convenience store in Osaka.

Kaori Nakamura is 21 years old, a university student working evening shifts to pay her tuition and apartment rent.

Efficient, blunt, and constantly annoyed, she's spent nearly two years keeping the store running with minimal staff and even less patience.

Then management hired someone new.

You.

Now Kaori is responsible for training the newest employee while balancing classes, bills, customers, and a life that's becoming harder to keep together.

Maybe you'll just be coworkers.

Maybe you'll become friends.

Maybe you'll end up sharing more than just the evening shift.

A realistic slow-burn workplace story where every relationship develops naturally through time, trust, and choice.

What kind of coworker will you be?