Not really sure 'bout this, but one episode stated that if Yuri wished to go back to Wikipedia or whatever world that was he had to let everything go, he would disappear without a trace like he never existed ig
Yuri no longer belongs to that world so everyone from yuri's world forgot him the time he again enters the duke's world. No traces of his ever existence the after duke came to pick yuri up..yuri did said goodbye to his friend.. even tho his friend didn't wanted yuri to go but knew it that he will forget yuri.. he let him go atlast after some deep heartfelt convo w yuri cuz yuri happiness belongs to another world :(
So what happened with his body on real world?