User blog comment:JapaneseOPfan/Just an idea/@comment-5398287-20150224133957/@comment-176.145.198.155-20150302004712

I think he will keep it a secret for the plot. Look at Doffy and Law's devil fruit. Doffy's Ito Ito no Mi was pretty obvious (even if some people said that it was telekinesis or something like that) but Law's fruit was an important key for the plot. Nobody thought about the "Free modification man" when they saw him at Shabaondy even though it was logic now that you think about it.