I don't know why he traveled to a hunter world where perverts are rampant for some weird reason, and a certain middle school boy with a weird personality that rarely appears happily accepted this result that seemed good to him, and then slowly grew into Hisoka's big fruit, Xiao Yi's good brother who is very well-behaved but occasionally has convulsions, and so on...
In short, this is the history of the growth of a middle-aged boy (actually half) in the hunter world...