This discussion was disappointing. Not only was reception to the song negative despite it being the most Maeda thing since ONE, but you guys missed so much.
The most obvious sign that something is amiss wasn’t even mentioned. The day she makes the lie is April 14th. Then the next entry is on April 31st. Not only is that a ridiculously large time gap for a diary, but April 31st doesn’t even exist. This is what leads to a giant hint as to what is going on… But I’ll mention that at the end.
Secondly, there wasn’t much mention of Owari no Sekai Kara. These songs are very similar, they tell the tale of someone who tried to change themselves so much that they ultimately replaced themselves. We’ve seen this multiple times in Key VNs.
We didn’t have much talk about the presentation either. This is a diary, and that is important. Note the large gaps in time between some entries mark this diary as unreliable narration. The worst part is events from a week ago will be referred to as “yesterday.” After a while this is made even more extreme, and instead of referring to events in the diary incorrectly, she refers to events that weren’t even in the diary. The events of the “apparently I had Coconut Curry yesterday” thing as well as the events noted by the previous entry are not in the diary, so where does she learn the information?
We’re missing around a month of information here. Not only is that bad for us, but it is bad for the heroine, because she too is reliant on this unreliable narration. The information in the diary we hear is also the only information held by the heroine. The date format not only shows us the April 31st mystery, but it also serves as a way to disconnect the final couplet from the rest of the diary, those final two lines not being marked by a date but by a “The next day…”
There are also discrepancies in the descriptions of various things. For example the seat placement of the guy is contradicted several times.
It is also interesting to think about whether this is written in third person or first. You’d naturally assume first person, but treating “I” or “me” as a separate character to the heroine is likely the way to look at it. I know someone with a memory defect and they treat their past self from beyond a certain point as a different person. This diary looks to portray a similar thing, at a certain point she stopped being herself.
We’ve also got a semicolon thing going on, with her receiving phone calls from herself after a gap in time.
There is also a fun little pattern of the heroine’s actions. The fading begins by her distancing herself from reality, and she furthers this to the point where, by the end of the song, she is physically running away from it all. She isn’t being made to disappear, she is trying to disappear.
So with all of that in mind, here’s what’s going on.
At a certain point, this girl split with herself. The two live in parallel at the same time, but one exists a day later. That’s a weird sentence, but here’s why I say that. At the start we have day-by-day entries. This is a daily diary, but that pattern is broken with the weird date April 31st, a day that doesn’t exist. This is the day in which the split is first noticeable, and the split occurred in a weird way. One lives in a normal world. One lives in that same world, but with a slightly different calendar. Still the two write in the same world-spanning diary. This messes up all the dates because they have different calendars despite living at the same time. What happened yesterday on the 4th for one, happened yesterday on the 5th for another. The fact that there is two of her is not only shown by the blatant doppelganger stuff, but by the fact that one of the writers remembers her childhood while another has no memories outside of the diary. One knows a lot, and one knows very little.
If this is true, the only day in which the two would live parallel to one another by date number would be May 1st and July 1st. The split would have happened in May, and the two exist together on July 1st, this would be the bug. Two people existing at the same time is hardly normal, so one of them was removed or something.
The last bit of the song is obviously the bit everyone will focus on, but why is it in the diary? The fact that these lines all exist within the same diary leads me to believe that this is still the same world. The Virtual World thing just seems too easy an answer, it makes the rest of the song rather throwaway. We do know from previous songs that the world of Owari will reject contradictions, so maybe it is that. If not, at least the headset lady exists within the virtual world.