Mc would know by referring to who in this group isn't in the future.
... Wait, is this why he didn't choose a side? So he isn't forced to make enemies and be the nakama faction that will save all lives?
Even if they are doing this without trying to explain because MC might have a stalker taking pictures and videos that would expose their punching bag plan, did they forget that the MC has superpowers to disappear from reality when it comes to them?
@garfnk You can't fear what you can't see. You're not afraid of that ghost behind you cause you can't see it.
... Unless you have red ears and can also hear it. R.i.p. ears. What's next though, red nose? Clowns can see smell ghosts this whole time!
I'm joking ofcourse.