Gokuaku Kizoku, Kenkyo Kenjitsu ni Musou suru: Gensaku Chishiki to Koyuu Mahou "Kokuu" wo Kushi shite, Hametsu End wo Kaihi shimasu

Hollow von Heisenberg is a villainous noble in the super-hit RPG "Lonzorkia." Gifted with talent in swordsmanship, magic, and academics, his laziness and arrogance seal his fate: defeat by the protagonist and death in every possible route. He is a walking death flag.

Suddenly, a modern man finds himself reincarnated as Hollow. Knowing the tragic future that awaits, he refuses to accept the script. Armed with knowledge of the original story and a unique hidden magic called "Void," he commits himself to humble, steady effort. This is the story of an "evil noble" who rejects fate through hard work and strategy to survive where everyone else fails.

(Source: Novel Updates)