Bro Makoto has a concept that his arrow will always hits targets no matter what that means his arrow will surpass infinity and hit gojo if he thinks that his arrow will hit gojo then gojo got cooked
She can just negate that by using her anti magic abilities or just draining his magic beforehand or just teleporting to a different dimension and draining him from there (she can do that, her teleport ignores any anti teleport measures). Her future sight will show her what he's about to do before he does it so she can counter easily.
no, she just one shots herself or gets one shotted. she has no way to hurt rem with her town level at best explosion magic, since Rem is above City Level. in volume 1 it never even surpassed Building Level.
what happened to the demons regen he solos all humans but he is not the sun so technically he cant kill them unless he has an iq which he does not its just a stalemate
Honestly Subaru will just give up after Papyrus is Dead, the "i still believe in you... You can do a little better even if you don't think so..... I promise" will just break him