hhmmmm..... She might be a girl, but her name is Subaru. Maybe she’s using an alias? her vibe is similar to Nishina Shima (Watashi ga Motete Dousunda) or Yuu Kashima (Gekkan Shoujo Nozaki-kun) or plottwist she is FUTA
The author really wants us to treat this like a mystery when he has given us absolutely no reason whatsoever to believe that he is even physically capable of drawing a flat-chested female character.
I thought it was already agreed that's a guy, especially since all the girls have been extremely well endowed. This vice president Reiko shows up as a rare exception, though.
Thanks for the chapter!
Quantum gendered, but at the end of the day they're still cute.
I also wouldn't put it past the author to have extra-dimensional chest-bindings that can hide J-cups with just a few measly strips of cloth.