Light Yagami's actions had a significant impact on the investigation led by L in the anime "Death Note." By using the Death Note to eliminate criminals and those he deemed as obstacles to his goal of creating a utopia, Light disrupted the investigation by creating chaos and confusion among law enforcement agencies. This forced L to adapt his strategies and tactics to try to catch Kira, leading to a cat-and-mouse game between the two brilliant minds. Light's actions also caused L to become more suspicious of those around him, including Light himself, which added tension and complexity to the investigation.
