After the Male Lead Disappeared (Transmigrate into a Book)

He Mengmeng was a tiny background character in an apocalypse novel, as timid and slow as a snail, always hiding in her shell whenever trouble arose. But she still died. No, actually, all of humanity went extinct. Because the male lead of the novel had disappeared. To be precise, the male lead's father died before he could have the male lead, leaving the apocalypse novel without its savior. He Mengmeng decided to return to the era of the male lead's father and do whatever it took to protect and care for him, until he successfully got together with the male lead's destined mother. Yi Jin found it strange that a gray, fuzzy mushroom kept appearing around him. When he climbed over the wall to skip school, she crouched on the other side to catch him. When he made out with girls, she watched him from nearby. Even when he got into a brawl... The timid young girl held out a copy of the Wusan practice exams. "Here. What problem can't be solved by doing a Wusan mock exam?"