Kinda dumb but... why did no one think of recording a message or a video

Didnt they did a recording audio?? Im not sure thoguh, but I think it wont either way for the esper's case ╥﹏╥

I think they did... but i feel like no one will remember it haha....

If it was me i d be documenting everything, the mc won't remember the recordings, but how annoying i was about them