One Piece: I can imitate any ability I want

What if you have a system that can mimic any ability you want?



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"Tired of the summer heat, Leon decided to spend his vacation at a pleasant seaside destination. By chance, he came across a dubious website specializing in tourist trips. Unfortunately, things took a turn for the worse when he suddenly found himself drowning in the middle of the vast ocean."





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I don't own anything, Except some character that I have made.