Incubo97

Hi everyone ! i would like to just ask a question: i have just finished kanto region with my friend, and now i'm going to johto, instead my friend is still in Kanto . Now, i am a lot of kanto pokemon of my friend that i use to defeat the league that i have to give back to my friend because also my friend must defeat the league. I know that for return back to Kanto i must finished Johto, but there is no way to give the pokemon back to my friend? They will add sooner or later the feature to return back normally? Please answer me PS: I'm sorry if there are any errors but I'm new on this forum