…which only responds to chiefs of the Poncle clan. He already is the person that he was afraid that he couldn’t become. His fears of responsibility and failure didn’t transform him into someone else meant to lead another life. They only derailed him from his path and led him to wander aimlessly. Ammy knows this better than anyone, and she’s staring at him right then because she wonders why he can’t see it.
He is a celestial envoy, and he is the chief of his clan, even though he doesn’t hold that title in name yet. He is Ishaku’s grandson, and for either of them to claim any different is ridiculous. He went through character development over this game, yes, but the ability to open up the spirit gate wasn’t something he needed to change for. He always had it.
I love Issun’s development so much because he isn’t developing these wondering divine powers as he improves himself. He had them and the ability to use them from the very beginning, What he is developing is confidence in his himself, and the courage to be who he really is.