Review Detail of playing_zone in One Piece: The Template

No, actually, template systems do not function in that manner. They are designed to facilitate growth, but in this particular case, the process took longer than anticipated to become realistic given the current context. It wasn't realistic for someone with a template system because the previous progression was unusually slow. It's not merely a talented protagonist training normally, but rather a protagonist with a template system training and assimilating the current template in real time. Typically, a timeframe of 5 to 10 years is sufficient for the template system to adapt one's body, brain, and abilities according to the selected template model. Template systems inherently have the advantage of being infinite, and since there will likely be more than one template model, the assimilation process shouldn't take too long for each of them.