When I Set My Sights on Becoming a Top Student

[Apocalypse + Infrastructure Building + No Romance]

On a moonless, pitch-black night, Lin Yi has worked hard all day and is lying in bed, ready to sleep, when a deafening boom suddenly erupts beside her. Then she loses consciousness. When she opens her eyes, she finds herself facing a wall covered in manga posters, the ones she put up back when she was in school.

When she realizes she has returned to her first year of high school, she resolves to become a top student.

Then she is suddenly told that the world is about to end?