First introduced in Summer 2015 Event, this mechanism allows the player's fleet to increase the damage dealt to the boss by fulfilling specific requirements on the event map. The exact mechanism varies depending on the map, but it had been present for Extra Operation maps from Summer 2015 onwards with the exception of Winter 2016 Event. This mechanic resets daily, at either 0000 or 0500 JST depending on the event. Without using this mechanic, the boss will ultimately be harder to defeat. The mechanism also appears to persist even when difficulty settings are changed.