He was a really cheerful and silly person untill the incident on Shibuya. Where he had to watch as Sukuna takes over his body and destroy over sixty-one thousand squared meters of Shibuya but also had to watch his teacher and friend die infront of him all that in the span of eleven minutes. Is safe to say all of that has changed him but also made his will stronger. But atleast there's a goal for him left and that is to unseal Gojo Satoru.