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

A devoted completionist who conquered every path of the notoriously intricate, multi-ending RPG Ronzorkia suddenly awakens inside its world. His elation is short-lived, however, as he realizes he has been reborn as Hollow von Heisenberg—a lazy, arrogant villain whose fate is sealed with death across every single storyline. Trapped in a body destined for ruin, he understands that if he fails to alter his behavior, the game's unyielding scenario will inevitably orchestrate his demise. Survival demands more than simply avoiding conflict; it requires absolute dominance. To escape his doomed trajectory, he resolves to weaponize the exhaustive knowledge he accumulated during his past life as a player. By fully mastering Hollow's unique magic known as "Kokuu," he intends to transcend the game's original limitations and become an overwhelmingly powerful force within this new reality. His grand strategy begins with a surprisingly humble first step. Rather than relying solely on noble privilege or raw magical talent, he approaches his own butler—a master swordsman of exceptional skill—and begs to be taken on as an apprentice. Through diligent training and unmatched foresight, this formerly wicked aristocrat sets out to rewrite his destiny and shatter the tragic ending written for him.