The Blue Devil That Blooms in the Sea (海に咲く青い悪魔) is the 39th event. As the featured event, it was a Shop Exchange / Raid Boss / Level Up Boss / Card Flip / Swan Boat Race / Medal Acquisition event. * Featured period: 5/1/2015 - 5/15/2015 * Republished period: 10/29/2015 - 11/11/2015 * Re-republished date: 9/12/2016 The following flower knights were introduced. * 5* Leschenaultia / レシュノルティア (Featured) * 5* * 5* * 6* The NAME series of limited edition equipment such as NAME Ring (の指輪) were introduced.