When I completed the Little Twin Star quest, I was told to see Mimi to help save Hello Kitty; at that time, I knew I was on the final arc.
The first series of quest was to build a detector and find the key. It was easy and soon I found the key; but it did not work. The key need a magic spell to restore function. I need to craft need three items. The quest, arc was in three parts that took me back old haunts, monsters, and NPCs in London, Paris, Florapolis, and Sanrio Harbor. It was to me a mini-review of my quest in the past year