Such an interesting episode, we finally got to see Dr Ramune's master, Master Momoji, and other side characters from the previous episode, Granny Ayame and Nico. The episode have quite an intriguing concept yet it also felt kind of simple. By the end, it was revealed to have a much deeper hidden meaning, a mysterious item that seems to hold great power. I'm curious! I sure hope they will reveal to us soon, there's only 3 episodes left to the series!