you have a time frame though through maya she has jokingly referenced hundreds of years stuck in it.
The key word there is jokingly.
It appears either Sel or Molly are not educated on the use of
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. I assume the former, since this seems like the kind of thing Sensei would know and point out.
It depends, are we talking old Sensei, the one who has this knowledge and who the girls know, or player Sensei, the one we play whose entire focus is getting laid.
Those are Loop memories. I'm not saying they aren't real, as they feature other iterations of Sensei. But memories of Ayane, the ones she had of Sensei from before High School might be plant, as I assume that's when the Loops started. You're ignoring what Maya said about adaptability of girls. She specifically compare them to either programmed npc, or machines, or computers (I don't remember the exact wording as I can't find the event she said this, but it was the once in which she confessed of forging Sensei's journal).
I'm not saying that's what it is exactly, just saying that their memories of him aren't any indication that before Loops started he was their Sensei.
And we know this for sure how? There hasn't been a confirmed reset prior to the start of the game, all we have to go on is the fact that those previous things, the detentions for example, happened. The adaptability comes in after the fact, I'm not ignoring it, just factoring it in where it seems to apply. They are adapting to the new Sensei, player Sensei, and since they aren't aware he isn't the one they know, they are much more adaptable than Maya, who does know he isn't the same Sensei and does know the other details that play into this adaptability, making her more resilient to the change. Otherwise she might have already started falling for player Sensei.
If I remember correctly, the comparison was to NPCs. That is correct that their memories are not an indication that their Sensei was there prior to the game, however, they aren't an indication that it wasn't their Sensei prior to the start, either and, in fact, the very first lines of the scene where he wakes in the classroom seem to indicate that he just arrived. Remember that he likened it to being isekaied, that indicates he is just then ending up in that world.
Well, either that or this personality we know as player Sensei is just then awakening while the original, old Sensei, lies dormant within the same body along with the memories of his students from before the game started. I'm still entertaining the idea that these aren't different people inhabiting the same body, but split personalities of the same person.
Both the game and the first reset have the MC start at his desk, and the moments after that are nearly identical, which indicates that is the start point of a given loop. The school year is already in progress.
So the detentions might be from a previous loop, or it could be from a moment before the loops began. We don't have enough information to determine which is true. I personally suspect they're from a previous loop, but that shouldn't be taken as absolute truth just yet.
That lack of information is what makes this topic so puzzling and interesting to theorize.
I'd assume the detentions are from before the loops, because the person who gave Yumi detention was clearly OG Sensei (she told Sensei that OG Sensei thought she was "wasting her potential", that doesn't seem like something our Sensei would say).
I'm more interested in the Gods of this setting tbh, the wire god is implied to be Ami's mom (Sekai i think) and Nozomu is implied to be Ami's dad (who's name is Nozomu), and i think HOPE is probably, possibly, the love child of Sensei and Sekai's love affair.
There was an unspecified accident of some sort that killed both of them and that's when Sensei became reclusive and withdrawn and maybe tried to commit suicide(?) or succeeded? Don't really know at this point.
There's clearly more to this than just that though, we have Kaori and the place she was in (a hospital of sorts) that doesn't seem related at all to Ami and Sensei's predicaments and overall the story at large seems to be bigger than just Ami and Sensei.
Rin at one point (after being heartbroken by Chika) told Sensei she dreamt that she was in a loop where she eventually succeeded in having her way with Chika and then there's how Makoto was after Bluejay.
Don't know what to make of it so far, but it's pretty fun to speculate.
I also believe the detentions to be from before the resets began. What she was told by the other Sensei does seem to be out of character for player Sensei, but not old Sensei, that sounds exactly like something old Sensei would say. If these monologues happen to be old Sensei leaking back out, then it sounds like old Sensei took his job seriously and actually cared for his students. Telling a student they are wasting their potential or punishing them for something in school, usually by detention, would fall in line with a caring teacher as well.
Maybe this accident was the catalyst for both Ami's current unhealthy mental state, her yandere and incestuous tendencies, AND the change in Sensei. Maybe the trauma of the accident resulted in some sort of personality shift or split, a major change where he either changed entirely or his original personality was taken over by something much darker.
True, but those memories might have been retroactively put there. If you think about it, the main indicator that Sensei been teaching them for some time is a forged journal.
Now, imagine the Loops just started, Sensei (doesn't matter if that's the same person or different right now) was put into a teacher role and the legend is that he's been teaching them for some time. He doesn't remember a thing a just wings it from there. He gives detention to Yumi, fuckes around (or sometimes does his job normaly), yada yada. Every reset he forgets and starts for a scratch (or it's another person every time, doesn't matter). At some point, to ease things and give Sensei the initial start in a direction she wants, Maya makes a fake journal. Everything just falls into place from there. Yumi's memories of detention she got from previous loops got recontextualized (and it's the case for every other girl) and that how we got a "background" of Sensei being a normal teacher, giving Yumi detentions before one day getting a case of myserios amnesia. Maybe various traumas and inadequacies girls have were also recontextualized events from Loops.
They might have or they might not have, we have no evidence to support or deny retroactive placement of memories. The forged journal may not be an indicator he wasn't a teacher, maybe it was a proactive aid written by Maya after the change to help him become closer to what he was before. Possibly even an attempt at a backup of sorts, something to jog him back to being him.
It seems like memories of past Sensei's are wiped wholesale. We've had two beach trips, a Halloween party, and a Christmas party in one school year. We're about to have another Halloween party. I expect some of the girls to comment that it's odd that there's two of those in a single school year, like there were comments about the second beach trip being strange -- and not JUST because it was out of season.
But if this loops been rolling for, as Maya implies, hundreds of years, then there have been hundreds of beach trips, hundreds of parties. But they only remember last year?
Past loops get wiped, likely around the same time that the girls opinions of the new Sensei get reset.
Yumi's a bit of a wildcard. She wasn't in class that day. HER memories are possibly intact. And out of all the girls that aren't Maya, she seems to have the clearest idea that something unusual is going on. She's asked Sensei about his memories (last year's Halloween event), she's noticed that he glitches out. That's why I suspect her detentions are from a past loop, where the other girls never make references to events that happened during previous Sensei builds.
And I think the key to cracking Yumi is getting her to the point where she actually feels comfortable asking about the loops, and she realizes she's not the only one who realizes it's happening.
I also expect this and you're right, the hundreds of years part doesn't add up. Would they not have been driven insane by now from this nagging feeling that they've done these things already compounded multiple times over?