Sensei seemed to consistently bring up what his brother's wife smelled like, around his brother.
I mean I'd be some level of angry too if my little brother sniffed my wife from time to time and had the audacity to actually tell me about his afterthought, no matter how little the rascal is.
When Ami was old enough to pick up on this, Akira would have been late teens or early twenties. That's old enough for him to be a genuine threat. Also, Akira and Sekai's relationship had been going on for about ten years, Nozomu might have noticed enough by this point to at least be suspicious.
Akira's family, or even just Nozomu, finding out that Sekai was raping him and deciding to marry her into the family anyway would be a new level of fucked up. That said, if Nozomu knew that for sure I don't think he'd let Akira keep hanging out with Sekai at all.
How in the world are people supposed to find this? If only there was some sort of colored directional symbol that could point them to it. Alas.
Meh he was 16 and though he loved her, she was probably in her 20s and she "loved" him too, it's not uncommon for people those ages to have something, but she couldn't marry a minor and seens she was deeply religious probably her family was too which may have pressured her to marry so Nozomu was the best beard to hide behind.
If you are asking about the exact month/date/year of the accident, I don't think there is a solid answer yet.
That seems to be my experience with them... They are actually immersion and story breaking. Why does sensei have access to these files on his computer? Right at the start of the game?
Everything about the laptop is immersion-breaking. A character's mind breaks if you want them to call you Daddy, but you can override it with your magic laptop!
Speaking of, this playthrough after the scene at the Yamaguchi compound I decided to change Chika's lust-master name to 'Gary'...
I'm still a little surprised that there is technically "Haruka's actual pipes" lore in this game:
