They won't stop with the Events at all.

Event Ongoing:
Mountain Lily, a knight of the Banana Ocean Kingdom.
Her greatest wish is to become stronger, in order to serve and advise Casablanca, the daughter of the royal family, and help turn her into the ruler she is meant to be.
In pursuit of knowledge, she left for the Sacred Mountain towering over the kingdom of Winter Rose.

Event Period: 17.05.2016 - 31.05.2016

There is no wiki entry for her right now, but it looks like she will be a Pierce Type. Somebody propably can grab the JP wiki entry for her.
But we don't have the usual get all the Medals type, but rather ressource Farming from Chests. Propably just one map where you need to get whats in the Treasure Chest to buy here and then do additional purchases to upgrade here, with Skillblooms and Copies.