if waking up from the new world program essentially reversed shsl for the ones who woke up and changed their bodies back to pre-despair (ala hinata. i still dont know how that happened but ok) then what the hell would happen to nekomaru? like for most of the group they didnt change a lot physically either inside or outside the new world program, with the most obvious exceptions being Hinata + Nekomaru (arguably fuyuhiko but its likely hed already lost an eye since its VERY likely he was the one who took one of junkos eyes when she died, so hes pretty much ok on this front), as well as maybe saionji.
but i feel like the changes would be most obvious with nekomaru, if he ever wakes up. like. ok saionji just would, theoretically, revert to her like 18yo short form and then eventually shed probably go through her growth spurt again and itd be like none of that ever happened. fuyuhiko, meh, still short.
but nekomaru was turned into a fucking robot like im not really sure how the hell you would explain that away. would he, irl, turn into a goddamn robot? like. holy shit what?
nearly everyone else just had some slight physical alterations (growing, etc) in the 2 years between start of school and sdr2 and that just gets reversed because they think they are 18 again or whatever but nekomaru would think hes a fucking robot so what the fuck.
you cant just make a robot out of thin air. thats not how it works. not unless someone on the outside actually made an approximate robot for nekomarus irl body and this is unlikely because until the 6th trial noone on the outside has ANY influence on the new world program because of the virus.