You know, I'm growing quite fond of Kaguya. He's such a positively masculine character, always staying respectful to others and keeping calm, while still respecting his own boundaries, both to Urato, and to this fellow with the ketchup on his nose.

Love the description of the scenery around the school; it sounds gorgeous! And the school basing their uniform colors around the autumn leaves is an excellent touch. Speaking of "scenery" though, that's a noun that's inherently plural, so in the line:
". . . Ichōnomiya High was famous for boasting a straight-up fairytale-like scenery every autumn . . ."
that "a" is unnecessary, and can be dropped.

—doctorlit wishes his school days could have been as laid back and Kaguya's and Momoka's