TSUTSUKI FINALLY UNCOVERS THE TRUTH ABOUT HIS LOST SISTER — CAN HE BOTH SAVE HER AND ESCAPE FROM THE NIGHTMARE HE'S BECOME ENTRAPPED IN? Lost after the devastating battle of Akihabara, Tsutsuki and his allies must push forward to finally save his sister. However, there are dark truths to be learned, about both himself and the mysterious sword known as the CORPSE BLADE.