Until now, the Battle of OniShima in The Land of Wano has been carried out, and there are three problems that need to be solved, the Four Emperors "Hundred Beasts" Kaido, the burning flames on Ghost Island, and the Ghost Island that may fall. Among them, the fire that covered the ghost island, Lei Zang and Xi Ping had joined forces to quell it, and it felt that the problem was not too big.
As for the other two problems, Yamato had already prophesied and was anxious to find a solution.
Luffy's "sit-ups" are much complained about, like a real immortal body, which sets off Kaido's strength. Kaido has always been supporting the ghost island and Luffy to fight, and now the ghost island is trembling, constantly disintegrating and falling, which means that Kaido is almost to the limit and can no longer hold the ghost island.
Yamato and Momonosuke work together to awaken Luffy's perverse. The collapse of the Ghost Island reveals that Kaido is no longer able to do so. From these two points, Yamato foresaw Kaido's defeat. Kaido's defeat means the fall of ghost islands, and many people will be killed.
To this end, the matter of Momonosuke's island was once again put on the agenda.
The reason why the ghost island floated was because of the flame cloud of Kaido, the Green Dragon Ability. Yamato hopes that The Dragon Momosuke, who has the same abilities as Kaido, hopes that Momosuke will create a cloud of flames and hold up the ghost island like Kaido did. This meant that Momonosuke needed to further master his own power, not knowing that he would have to create enough flame clouds and be able to hold up the ghost island.
Although Momonosuke has only recently faced his abilities, it will not be long before he becomes a dragon. But LuFfiko learned to be a bully, and when he was beaten, he could also awaken the fruit ability, and Momonosuke only mastered a flame cloud skill, which didn't seem to be too difficult.
As a future general of The Kingdom of Washinoku, Momonosuke needs to build his prestige with battle, and it is just right to save the entire Ghost Island.