-The grammar is amazing, barely any error and the sentences are well structured, its one of this fics strongest points.
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-Updates: Very often, also one of this fic's strongest points.
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-Story: It was amazing until around chapter 25, but then the priority went from getting "stronger" into taking care of his favorite characters at the cost of his own freedom basically, he bound himself to an area just to get three women into his harem.
Basically, an adult in a child body since he was three, yet he is basically having sexual exploits with his "adoptive" mother since the age of 7.
I ended up stopping to read this fic after chapter 54, due to the fact the flawed logic to write a forced lemon got out of hand: Three young girls that has been under captivity for years, being exposed to horrors in slavery, no doubt sexual in nature, all of a sudden wants to "do it" with the 10 year old mc?" Nah.
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-Character Design: Mihawk and the MC was something very fresh, the MC developed a concept of haki then all of a sudden it turns out every important figure that has died in the past conveniently had it... Like Gol D Roger, Joy boy, and I would assume the world government by now.
It was a very good idea, but destroying everything that made the MC unique was... not a good idea.
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-World Background: Its the one piece world, it's an amazing world overall, so there's not really much to say there.
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Overall, it was a great read, but when it became a harem collection generator I decided to stop reading, either way the author writes very solid fics and I felt myself grow as a fresh author myself after reading his works.
Keep it up author! :)