How did everyone interpret the ending scene with the magic mailbox and card invitation?

Was it an invitation to visit R again? to see/learn more magic from other magicians?

I'm interested in seeing everyone else's opinions on this.

I like how open-ended it is and like to imagine it's an invitation to visit R and experience more magical moments.

p.s. if this manwha continued I'd hope Hana would give Ildeung a chance as I expect he'd confess on xmas eve!

It might be that R is back. It could also be Ah-ee. Personally, I think that Ah-ee decided to do as R did and try to teach people magic, as well as his view on life: "I'm not telling you to always do whatever you want. I'm saying you should do just as many things you want to do as things you don't want to do. That's what life's about."

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