Can you really tell that Marin has gained weight? Apparently yes; multiple people point it out in this week’s episode. In fact, Nowa supposedly noticed it when Marin was cosplaying as Rei-sama during the cultural festival. Well, you coulda fooled me. But it’s anime, so it’s hard to tell unless they oversell it. Anime can show me two different characters, tell me that person A is way hotter than person B, and I’ll just be like “Hweh?” But I digress. Marin’s girlies actually speculate that the special undies required to give a person a masculine body shape probably hid the weight gain. But if that’s true, then how did Nowa notice anything? At the end of the day, ball don’t lie, and the “ball” in this case is Gojo’s bespoke costumes. They were specifically tailored to a snapshot of Marin’s body, and if they don’t fit, then they don’t fit. Can’t be in denial about that.