In response, McElhenney sent a video message where he invited Seirian to the Cae Res to watch Wrexham live in action against Bristol Rovers on April 18. He said: "Hey Seirian! Or should I call you chemo ninja? I just heard some amazing news that you just rang the end of treatment bell. Wow! That deserves the hugest congratulations! That is absolutely incredible and on top of that, I heard that you are a red belt in taekwondo? I think you might actually be tougher than me. You are definitely tougher than Ryan, that's for sure, but ya, I'm gonna say that you are probably tougher than me as well.
"Also heard that you are a big Wrexham fan and that, unfortunately, you missed out on some of the player visits to the hospital over the years. Well, we would like to fix that. So I have a very, very big favour to ask you. Will you be our special guest at the Cae Ras on April 18 for our match against Bristol Rovers? We would love to have you as our mascot for the day and it would mean so much to us, to everybody at the club and of course, we will make sure your parents are there to cheer you on."
He added: "We'd love to have you up the town always, and oh! By the way. About Imagine Dragons, I do know that you've got incredibly good taste in music and football teams. I can't make any promises but I'll see, what I can do. Congratulations again, keep fighting hard. Seirian, the chemo ninja, just keep being amazing and I hope to see you soon."