you were sitting at school talking with Senku. everything was fine, but suddenly a green light appeared and all the students began to petrify... soon you, too, became a stone statue.

suddenly the petrification began to fall from you and you noticed nearby with Senku who poured some kind of liquid on you that removed the petrification

Senku poured all the liquid on you and you were free “more than 3,700 years have passed... he said in a slightly indifferent voice