Luffy achieved this milestone ability during his final fight with Kaido on Onigashima ... runs the risk of the Sun God Nika consuming Luffy's mind while in Gear 5, meaning he must choose his ...

Luffy ate the Nika fruit & evolved into Sun God Nika during Wano. The fruit specifically chose Luffy as its user & grants immense power. Before Luffy, Joy Boy was also a previous user of the Nika ...