That is also the problem. At the very least it should be the most trusted people the one he should tell to. Not every single friend. There is also a lack of reaction like going back in time is no big deal for them.
He has only told his family, childhood friends, best friend and people like the principal. He told them because they had some purpose in helping to prevent many people from dying.
No, he didn't, he told his past to the whole party. I can understand the parents, nakururu and the best friend but it was unnecessary for him to tell every single friend. Moreover, the friends' reaction like it isn't surprising to travel to the past. If you were told by a friend that you died in his past life would you have an indifferent reaction and laugh it off if you believe him?
Yeah the fact that he keeps telling everyone about his past life bother me. I get that he don't want to have the same trauma as before, but telling everyone abt it like its no big deal...is stupid. If i was in his place and said that i died and came back to prevent my previous life disaster, people would have at least told me to stop joking or they will plainly call me crazy and be send in jail for propaganda or be suspect to conspire with demons and be label a heretic ┑(￣Д ￣)┍
I expected a more dramatic reaction than laughing it off. MC witnessed his friends' death and the friends who were told that don't have much of a reaction.
Other people in their second life: I'm not going to tell anyone i died and was reborn.....okay maybe i'll tell that one other op character.
John every time he makes a friend: Hey let me tell you about that one time all of us died and i got sent back in time.