Synopsis

Having lost their parents when they were young, the three Amamiya brothers have been exceptionally close. A year ago, the oldest brother, Takeru, suddenly disappeared, and one of the reasons Masaki and Hiroto ventured into SWORD was to try and find him.

 

Expecting him to show up at their family tomb on the anniversary of the death of their parents, they instead meet Naruse Aika, who holds clues to Takeru’s whereabouts. As they follow the clues to find Takeru, their mission to find their brother quickly overlaps with the mission to save SWORD.