The National College Entrance Exam: I'm the Ultimate Debater

[Danganronpa + JoJo + Dark Themes + Decisive and Ruthless + Mind Games + No Holds Barred + National Fortune + No System] Cheng Shi, a high school senior preparing for the 26th national college entrance exam, transmigrates to a parallel world almost identical to Blue Star. The only difference is that every year, this world is forced to hold a National Fortune College Entrance Exam. From the national qualifiers to the continental preliminaries and then the world championship, only the five countries with the most surviving examinees ultimately become winners and receive a national fortune boost. Every examinee forced to participate in the National Fortune College Entrance Exam is randomly granted an ability, ranked from lowest to highest: D, C, B, A, and S. But Cheng Shi receives the lowest rank: D. [Your ability is: Ultimate Debater. Ability description: Use any means, including lies, sophistry, and actions. All you have to do is make someone believe you possess a certain ability, and you can temporarily gain that ability. Additional effect: Sophistry becomes reality. When more than 50 examinees have been deceived, you permanently gain that ability.] When Cheng Shi sees that his ability is the lowest rank, D, his heart sinks. But after reading the description, he discovers that things aren’t as bad as they seem. “Holy crap, this ability is ridiculously overpowered! What are we waiting for? From the start, I’ll get myself the Dog Talisman for immortality!”