Tasha you have to remember that normal people can't see spirits like evil eye they only see jiji remember whenever okarun transformed that one time and put that bully in his place for talking about momo in that situation the guy couldn't see him in his turbo granny form they just noticed that his strength had increased so basically what I am saying is that only people with high spiritual awareness like momo, granny seiko and okarun and aira can see spirits everyone else in the school can't hope this helps