The spatial blade which Yuki had forced to move instantly landed right in front of the dragon, in turn creating a type of protective shield for Yuki so that he couldn't be attacked from the front.
Seeing this, the dragon noticed the obvious flaw in Yuki's strategy and took advantage of his other open spots. Those being attacked from the sides or the back.
However Yuki wasn't going to act stupid on a situation like this and instantly forced 3 more blades to surround him. Each one covering his right side, left side or back. As such, enclosing him in a box-like structure which was entirely constructed from a spatial blade.
Now having nowhere to attack from except one area, the red dragon grit its teeth before flying high in the sky so it could go in for a final attack which was the only way he could reach Yuki from.