I FINALLY FOUND IT! You guys probably got a hold of it ages ago but I just couldn’t find the movie anywhere! Here’s the link to it on youtube. I haven’t had the chance to watch it yet but I can confirm there is whump.
Tldr Eiji Akaso invited Atsuhiro Inukai out for dinner (???????), made the reservations under a different name, then became awkward when he told the receptionist the fake name he gave and got told he was bad by Acchan on the spot lmao
They're still trolling each other like RyuSen would 😂 They truly are the best match of all time