In the web novel 'A Mastermind? No, I’m just the Live-In Son-in-Law', readers are introduced to a unique storyline where the protagonist is constantly mistaken for an evil genius. However, the reality is far from it as he navigates his life as a son-in-law living off his wife's affluent family. Filled with elements of action, adventure, comedy, fantasy, and the supernatural, this Korean novel delves into the humorous misunderstandings and situations arising from the protagonist's seemingly suspicious appearance and circumstances, providing an entertaining read for fans of knights, magic, and transported into a game world narratives.