This was a great episode, half of it was how the mysterious disease was healed and another half was for the aftermath of the whole incident, we finally got to see Rio and his mother heal, and gradually getting closer again. This was such a nice closure. Aside from that, Dr Ramune and Kuro's dynamic is explored more in this episode too. Overall, this is easily the best arc in this entire series so far. The next one will be a new case, let's go!