is jujutsu kaisen episode 16 filler?

Todo takes Yuji's education to the next level mid-battle, teaching him about the flow of cursed energy and how to maximize his strikes. Meanwhile, Panda fights Mechamaru in a clash between cursed corpse and puppet, revealing Panda's three-core system.

Maki demonstrates her combat prowess despite minimal cursed energy. Todo's Boogie Woogie makes its first appearance — a simple clap that swaps positions, turning the battlefield into a chessboard only Todo understands.