In JJS as Ryu, the rubble/debris throw is usually done by aiming the move into a nearby wall or hard surface , then letting the debris spawn/break off and flicking it toward the enemy before it dissipates. A recent short guide also points to Ryu’s domain/barrier interactions as part of the same debris setup, so positioning matters a lot more than raw timing.

Simple setup

  1. Get close enough that the attack can connect with a wall or obstacle.
  1. Angle your camera so the debris has a clear path back toward the opponent.
  1. Fire the move, then immediately track the rubble and direct it at the target.

What usually helps

  • Use corners and edges, because they make the debris line up more reliably.
  • Don’t stand too far away, or the debris often breaks the angle you want.
  • Practice the camera turn in a safe area first, since the input looks simple but is easy to mistime in a fight.

Why people mention it now

Recent posts and clips show players treating this as a newer or more advanced Ryu trick, often framed as a “debris throw” or “throw rubble” tech in JJS. One clip even describes it as “fling enemies with debris,” which matches the wall- aim setup people are sharing.

If you mean a specific Ryu move name in JJS, this is the likely method people are referring to: wall-aim, spawn debris, then redirect it toward the enemy.