The significance of Light Yagami's rivalry with L, Near, and Mello in the anime "Death Note" is that it drives the plot forward and creates intense psychological battles between the characters.
L is the initial rival of Light, a brilliant detective trying to uncover Kira's identity. Their rivalry showcases a battle of wits and intellect, making it a central theme of the series.
Near and Mello, successors to L, continue the pursuit of Kira after L's death. Their rivalry with Light demonstrates different approaches to solving the case, with Near relying on logic and deduction, while Mello takes more risky and aggressive actions.
Overall, the rivalry between Light and these characters showcases themes of justice, morality, and power, making it a key aspect of the storyline.