World Colonization: I know the Plot!

After a lifetime of enjoyment and luxury, Willis, a young orphan who had yet to embark on the pinnacle of life, died of a heart attack. Unexpectedly Willis after his death found himself reincarnating in a Futuristic Modern world incredibly similar to his previous world but with many differences, but before Willis could show off his baby genius, his System arrived! Broken...?
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I'm a first time writer with this being my first novel i've ever written! I'm planning on having this novel be a "infinite flow" based novel, if you don't know what that is, its when the MC travels to various different worlds of anime/movies. This is a fanfic after all, if you have a world you would like to see, please recommend it!
PS if I ever decide to do 18+ chapters I will mark them!