That counter attack hits hard, so Sparks uses this chance to drop a Healing Force on himself and those around him to get some health back. And so long as the Knights keep targeting him, they'll feel the affect of his Firewall, so that should help in offense. Since he can't see the enemies this round, he'll also use this opportunity to use a buff, and gives Chiaki a Metal Kick to raise her defense against spells. Her death had also triggeed Desperation in Sparks, meaning next round the Knights are in for a hell of an attack.