Top 5 :- Strongest Shinobi

 Overview 

A shinigami, as a god of death, can kill any person—provided they see their victim's face and write their victim's name in a notebook called a Death Note. One day, Ryuk, bored by the shinigami lifestyle and interested in seeing how a human would use a Death Note, drops one into the human realm. High school student and prodigy Light Yagami stumbles upon the Death Note and—since he deplores the state of the world—tests the deadly notebook by writing a criminal's name in it. When the criminal dies immediately following his experiment with the Death Note, Light is greatly surprised and quickly recognizes how devastating the power that has fallen into his hands could be. With this divine capability, Light decides to extinguish all criminals in order to build a new world where crime does not exist and people worship him as a god. Police, however, quickly discover that a serial killer is targeting criminals and, consequently, try to apprehend the culprit. To do this, the Japanese investigators count on the assistance of the best detective in the world: a young and eccentric man known only by the name of L. [Written by MAL Rewrite]

Premise

Genius high school student Light Yagami finds a supernatural notebook that allows him to kill anyone by writing the victim's name while picturing their face. The story follows his attempts to become a god by creating a New World cleansed of evil, using the notebook, and the complex conflict between himself and all those who try to stop or help him.

Main Villain

Ryuk is the deuteragonist of the Death Note franchise, though he would later become the main antagonist of the one shot special chapter, set after the events of the original series. He was the one who inadvertently gave Light Yagami the Death Note and instigated his killing spree.

He was voiced by Nakamura Shido II in the Japanese version of the anime, and Brian Drummond in the English dubbed version (Who also voiced Vegeta in the Ocean Dub). In the Korean Dub, he is voiced by Eung-Sik Min, who also voiced All For One from My Hero Academia and Evolt from Kamen Rider Build.

Biography 

The manga or anime begins with Ryuk and the other death gods in the Shinigami Realm. Ryuk was bored with the lack of activity as all the death gods are relaxing. So he decides to obtain a second Death Note by tricking the Shinigami King, write the instructions in English and drop it into the human world. The plot begins when Light Yagami found the Death Note in the midst of his school.

5 days later, Ryuk had a conversation with Light. The simple reason he gives about why he dropped the Death Note into the human world is that because he is bored. He then tells Light that since he was the one who found the notebook, it belongs to him. If he does not need it anymore, he can pass it to anyone else. But when it is the time for Light to die, Ryuk will write his name down. Light then explains to Ryuk that he wishes to cleanse the world of evil criminals, and becomes the God of the new world. But Ryuk told Light that if he were to do that, the only bad person left will be Light himself. Light ignores his comment, saying that he is plain serious about what he is doing. Ryuk then comments about humans being interesting.

The events of the show only gets to keep the death god entertained for six years.

At the end of the manga, Light was revealed as Kira after his plan to kill everyone present in the warehouse was foiled. He was then shot five times by Touta Matsuda when he attempts to write Near's name down. Light then asks for Ryuk to write his enemies' names down. The police open fire on the death god, to no effect. It turns out that Ryuk was actually writing Light's name down. During Light's pleading, Ryuk reminds Light about what he said earlier that he would be the one who kill him, and that humans who used the Death Note will neither go to Heaven, or Hell, before returning to the Shinigami Realm. Light disgracefully dies of a heart attack from Ryuk's Death Note while laying on the floor in front of the SPK police officers.

In the anime, Light does not talk to Ryuk, but manages to escape from the warehouse, due to Teru Mikami's suicide. Light ran as fast as he could, but could not for long as his wounds were severe. Ryuk, watching from a distance as Light hides in another warehouse, comments that Light had lost. He does not want to wait around long during Light's prison term, so he writes the latter's name down, just as he promised in the beginning. Light dies peacefully soon after.