Revealing mistake: In the presentation for the fellow Ultimate Students, the screen scrolls showing several magazines Junko, the Ultimate Fashionista, has appeared in. In the background, one of the magazines has obvious jibberish filler text in it, since it goes, I quote: "argrwgawrg agreg agregraegraaerg asg."
Other mistake: In Chapter 3, when Jiro is found in the pool, the narration says "Without a missing a bit, Hina started putting on the Robo Justice costume." Bit for "beat", obviously.
