User blog comment:Fliu/Chapter 987: Now It's War!/@comment-47.26.5.186-20200811020049/@comment-47.26.5.186-20200813124728

Momo has been weak, being a child against adults. By aging him he can gain back the strength of his older self. His is slowly building his courage and I expect he gets to a point of truly leading as he is and then Shinobu will step in and age him to actually fight. The other thing it adds is to his dragon form. Currently he is a small dragon, being just a child, being an adult his dragon form will drastically grow in strength and size. As for Zou, it is the question of what did Momo learn spending time with Zou and ability to command it.