A Guide for Background Characters to Survive in a Manga

Synopsis of the manga "A Passerby's Guide to Self-Rescue" (expand to read the full text∨): Su Bei, an F-class freshman at "Endless Superpower Academy," awakens a new ability on his first day. Only then does he realize that their world is a comic book. The protagonist is his classmate, Jiang Tianming. But that's not the point. The point is that in the next chapter, he, Su Bei, will die tragically in the restroom!