Sign-In: A University Security Guard Makes a Flying Mech from the Start

The protagonist, Su Lin, transmigrates to a world identical to his previous one and manages to land a job as a security guard at a vocational college.

All his coworkers are men over fifty.

On his first day at work, he awakens the University Sign-In System and gets a blueprint for a flying mecha as his sign-in reward.

Meanwhile, the school holds a fun science and technology competition to encourage new students to learn.

The security department's responsibility for the competition falls to Su Lin.

On the day of the competition:

The cafeteria auntie: "This is the anti-shake spatula we made."

The cleaning lady: "This is the... robot vacuum we bought... made."

The PE teacher: "This is the never-give-up weight-loss treadmill we made."

Finally, Su Lin descends from the sky in a mecha. "This is the flying mecha I made."

He scares the students watching the competition to tears.

This novel and its characters are purely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.