One Piece has officially introduced Momonosuke Kozuki's full adult form with the newest chapter of the series! The Wano Country arc has been the longest arc in the series to date, and the manga recently brought the fight between Luffy and Kaido to an end as well. This served as the longest stretch of time for a single conflict in the entire series overall, and thus the chapters we have gotten since are beginning to explore the immediate fallout of such a massive war with so much on the line for every character involved. This is most true for Momonosuke in the center of it all.