Corrupting Worlds Otherworlders

Avatar: The Last Airbender
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Transported to another world whilst sleeping, Genji found himself on a Fire Nation Ship.

Without knowing what is going on or why it happened, Genji could only rely on his knowledge and memories to guide him forward. With no goals in mind, Genji has to grow stronger and find a goal to strive to and become the strongest in the world of Avatar. if he wishes to live in peace and feel safe.

However, is the Avatar World truly the only world he will be in?

With a system in hand, will he really only remain tied to just a single world and keep himself chained down?
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Disclaimer: Unlike my other stories, this story might not contain any lemon, but just in case I end up writing one, I had left the r18 tag on it.