is jujutsu kaisen episode 30 filler?

noit's canon

title: It's Like That

Back in the present. Nobara meets Yuko Ozawa, a girl from Yuji's old school who had a crush on him.

The episode is a breather — light, funny, grounded in the kind of teenage normalcy that jujutsu keeps interrupting. It's also the last time things feel this simple before Shibuya.