Naoto is actually a girl in disguise as a boy. To a player starting the game they will take Naoto to be male but it's revealed at some point that he is a SHE. There have been screenshots and portrait rips from the Japanese version of the game going around showing this to be the case, and Japanese fan art of Naoto has begun to reflect "his" true gender.
The reason I'm saying all this here is that I've seen Naoto pics tagged as "male" or "male_only". I just changed these tags on one pic but then I wondered: should we actually do that or should we leave them to avoid spoilers? A point against leaving them is that there is already a pic of Naoto with her tits out and a pic of her with a chest bandage being embarrassed at being discovered.
Updated by 0xCCBA696