Ezio preforming a Just Gaurd.
Just Guard (ジャストガード?) is an element of game mechanics first introduced in Soulcalibur V. In execution it is similar to just-frame moves, implying that the guard input must be given just as the opponent's attack is about to the hit the player. If successful, Just Guard is indicated by a blue color effect and gives the player a frame-wise advantage, especially against powerful moves with a huge pushback. It is also supposed to make attack strings more interruptible.
Just Guards can block all attacks, including Unblockables, but not Throws or Critical Edges.