Spring 2013 Event

Event begin on May 17th, 2013 and lasted until June 5th, 2013.

E-1 - 前哨戦 (☆☆☆)

 * Boss health does not regenerate.E-1_Map_May_Event.jpg
 * Reward Repair Goddess upon clearing.

E-2 - 警戒線突破 (☆☆☆☆)

 * Boss health does not regenerate.E-2_Map_May_Event.jpg
 * Reward 46cm Triple Cannon upon clearing.

E-3 - 湾内突入！ (☆☆☆☆☆)

 * Boss health regenerate one gauge every two hours.E-3_Map_May_Event.jpg
 * Reward Shoukaku upon clearing.

E-4 - 敵泊地強襲！ (☆☆☆☆☆☆☆)

 * Boss health regenerate one gauge every hour.E-4_Map_May_Event.jpg
 * Reward Shinden Kai (震電改) upon clearing.