Boku no Hero Academia Reigi Kouza  

My Hero Academia Etiquette Course, BnHA Manner Movie, 「僕のヒーローアカデミア」オリジナル映画マナー講座

It features comical interactions that make use of the usual characters, such as Bakugou getting angry over a phone call during the screening between the current No.1 hero Endeavor and his son Shouto, and Deku getting flustered when Bakugou starts eating snacks!(Source: Toho Official Website)