For some reason, the nonhuman circle gender really itches at John's missing memories. I actually have a bathhouse starter up if you want to thread any of them vibing - John still hasn't figured out it wasn't the real Min-Gi he met when he was purifying water, which might get them talking about doubles.

Other handwaved bits: John spends a lot of time sitting various places with tea and a notebook, and might wave Min-Gi down to chat. Collecting depressed teenagers is actually his primary canon pastime, even if he can't exactly mentor Min-Gi in spooky bone magic.