Momonosuke should join the Straw Hat Pirates crew as an apprentice. There are three people in particular who he should learn from.
![](https://www.opfanpage.com/wp-content/uploads/2020/04/tumblr_pddenzV8ZF1xvniz9o6_1280-1024x576-1.jpg)
Zoro – He can teach Momonosuke swordsmanship skills. Which is very important since Momonosuke will need to become the leader of Wano.
![](https://www.opfanpage.com/wp-content/uploads/2020/04/plk-2.png)
Nico Robin – The Kozuki clan were once able to read the Poneglyphs. However they can no longer. But If Robin tutors him that tradition doesn’t need to end.
![](https://www.opfanpage.com/wp-content/uploads/2020/04/iVsyAgo.jpg)
Chopper – Right now Momonosuke has no control over his Dragon abilities. If Chopper helps, he could use Rumble Balls to improve his abilities.
![](https://www.opfanpage.com/wp-content/uploads/2020/04/unnamed-3.jpg)
Another factor no less important is the relationship between Luffy and Momonosuke and how it evolved.
Luffy gives the boy a reality check.
![](https://www.opfanpage.com/wp-content/uploads/2020/04/z9zbam45afr41.png)
Luffy treats the boy like a man.
![](https://www.opfanpage.com/wp-content/uploads/2020/04/9tisvi45afr41.png)
First big character progression for Momonosuke. Kawamatsu takes notice.
![](https://www.opfanpage.com/wp-content/uploads/2020/04/vcmxf665afr41.jpg)
Luffy’s proud of his little brother’s courage and resolve.
![](https://www.opfanpage.com/wp-content/uploads/2020/04/21qhtj45afr41.png)
One of the most underrated part of the Saga. While Luffy’s been growing as a man and leader, he’s also been teaching Momo how to grow up too.
![](https://www.opfanpage.com/wp-content/uploads/2020/04/repf3l45afr41.png)
Last thing I want to add is comparing Momonosuke to Vivi, where Vivi is an official Nakama but she’s not on the ship.
![](https://www.opfanpage.com/wp-content/uploads/2020/04/Straw.Hat_.Pirates.full_.48717.jpg)
We could have a situation where if Momonosuke proves himself he can be an honorary Nakama.
*Theory by DiamondCoal / Lelouche85