>>101439468
>that niji koshien stream has already started for a good hour by the time she get those bots anon
They are smart enough to time the bots with the events within the stream not to call as much suspicion.
In this case, as it is not the gacha, they have to time it with the end of the school year.
In any case the other “big wave” instances came one hour in, just like this one and with a similar shape too