Oda was always going to introduce an internal power system but probably didn’t have what it would actually entail down.
Do you think Oda had planned Haki concept from the start? In 2002, Blackbeard implied Luffy’s Haki was way too strong for a 30 million bounty, but Viz official translation misread and skipped the word Haki.😭 This chapter is the first time Haki ever shows up in the series.