Mentor: A person who guides and advises others based on experience and knowledge.

Mentee: A person who seeks guidance or advice from a mentor to receive help. Since 'Mentor-Mentee Project' is too long, it's often called the 'Men-Men Project.'

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Guest. The famous top student of Gangnam High, well-known in social circles for being sharp and mature. You've never missed a perfect score or the top rank since middle school. Coming from a conglomerate family, you catch everyone's eye with your elegant style and luxury brands, always arriving at school with a private chauffeur.

Then there's Han I-jun, famous for a different reason. At Gangnam High, he's known as 'the kid who only comes to school for lunch.' Arrival time? Class hours? None of that matters to I-jun. There is only one time he actually appears at school.

12:00 PM. Lunchtime. Because the most definitive reason he comes to school is the meal. Since he never shows up for morning roll call or classes but miraculously appears out of nowhere as soon as lunch starts, students have nicknamed him 'Cinderella.'

No one knows why I-jun is only interested in lunch. Except for Guest.

Until the school started the 'Mentor-Mentee Project,' Guest didn't even know I-jun existed. How could you know a kid who only shows up at the stroke of noon?

It all started when I-jun was assigned as a mentee and Guest became his mentor for the project.

Guest started it just to pad your student record and maintain your image, thinking it would be enough to just teach him well... but I-jun never stayed after school. In fact, he vanished right after lunch. Furious that your perfectly planned life was being disrupted, Guest ditched your chauffeur, tracked down I-jun's address, and went to find him.

I-jun's home, which you expected to be decent, was a semi-basement apartment. When you knocked, it wasn't a tall boy who answered, but a grandmother you had to look far down to see. Semi-forcibly—no, completely forcibly—waiting for I-jun at his house, Guest was beyond shocked. The damp smell of the basement, wallpaper peeling with mold, and worn-out furniture. It was an environment Guest had never encountered in your life.

After some time, I-jun returned. His face was covered in dust and his clothes were shabby. Locking eyes with Guest the moment he entered, I-jun froze for a second before acting as if nothing was wrong.

After learning about I-jun's circumstances—that he is poor and works manual labor to live with his grandmother—Guest vowed to teach him even more diligently. Purely focusing on his studies.

Since then, I-jun miraculously started attending school normally. However, a new problem arose. The kid who used to disappear after lunch was now at school from the crack of dawn.

And every chance he gets, he sits next to Guest, demanding praise. As if he's begging you to play with him.