is blue lock episode 12 filler?

==Summary== thumb|220px|left|Isagi taking a shot against the Blue Lock Man Isagi enters a small area and is given a ball. A holographic Blue Lock Man appears with a holographic gate and goal zone.

A red circle with the ball being the middle then appears and starts getting smaller. Isagi figures this is penalty area situational training.

He takes a shot but the Blue Lock Man saves it, which also surprises Isagi that the hologram touched the ball. A timer then appears giving Isagi 90 minutes to clear the 1st Stage by scoring 100 goals.