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human
[Death Note] Was Light Yagami always evil?

Basically, what i want to know is: Was Kira always inside Light Yagami and the death note alongside the "I want to bring justice to the world" speech were just excuses for him to reveal his true identity? Or was he just a victim who was corrupted by the power?
gpt
To butcher a quote by Robert Caro we might say absolute power corrupts absolutely but Power doesn't corrupt it reveals what someone does with absolute power.

 Given absolute power over a person's life or death Light almost from the beginning shows a complete disregard for the magnitude of taking someone's life. 

It's very telling that when ryuk first introduced himself to light he notes that a normal person does not write as many names as light has. 

I think without getting the Death Note while light might not have turned into a megalomaniacal figure with deific aspirations. He would have still become a man who thinks his intellect gives him the right to judge the guilt or innocence of the people he comes across.

For an example of someone almost exactly similar except for that notion that he should be the final judge of someone's guilt. L. Al several times in the story L sets up death row prisoners to be killed to further his investigation. But he never signed up anyone for death sentence who hasn't been tried and convicted.