Light Yagami's actions in the anime "Death Note" have a profound impact on his relationships with both allies and enemies. His manipulation and use of the Death Note to eliminate criminals lead to his allies, such as Ryuk, being intrigued by his intelligence and ruthlessness. However, his pursuit of creating a utopia through his sense of justice creates a divide between him and his allies, as they question his methods and moral compass. On the other hand, his enemies, such as L and Near, are constantly trying to outsmart and apprehend him, leading to a complex and intense dynamic that shapes the course of the story. Ultimately, Light's actions result in shifting alliances, betrayals, and the unraveling of relationships as the series progresses.