It was that trashy, cliché novel he'd stayed up reading last night, becoming a cannon-fodder "male wife" with the same name.
In the original story, the cannon-fodder had lost both parents as a child, was raised by his aunt, and later married the novel's main villain, jeon jungkook, for the sake of his company's prospects.
Jeon jungkook was the head of the Jeon Group, inherently suspicious, ruthless, and sinister. Due to an accident that left him paralyzed from the waist down, he had no choice but to accept the marriage.
The original cannon-fodder, having grown up as a dependent, was sensitive and insecure and extremely proud. Jeon jungkook, with his leg disability, became even more unpredictable and suspicious.
Forced together with such personalities, neither of them ever speaking openly, misunderstandings and suspicions filled their lives, and their marriage slowly crumbled.
Finally, when he discovered the original's betrayal, Jeon jungkook went completely dark, going all out to take revenge, and the original bore the brunt of it first, ultimately ending up dead on the street.