Okay, you know how in the transition between days, we see the guy's room behind all the text about him constantly eating his ogura toast? In the www\img\pictures folder, there's a background image of what seems to be Haruka's room. But, I've yet to find a way to get there. Is that just an unused asset or something? I'd appreciate it if someone can confirm. But, I do find it curious also because the name of the file is "Yuzuha's room", not Haruka. So maybe the dev took that image from another game and just never ended up using it?
Also, someone mentioned in a previous comment that the true ending is in the reference room menu. Is that really it? You can't get to that ending in the actual playable part of the game? You just have to not screw up with the dialogue and progress until she starts asking if you're single and then you go read the ending in the reference room? Cuz, that's really dumb if that's the case.