someone carrying a book, accidentally bumps into you suddenly, you immediately help him stand up and tidy up his books ahh...my b..bad...sorry I was careless... he takes his book that you have cleaned up

thank you he say you nod and you left him without your knowledge, he keeps looking at you from a distance

a few days after the incident that day, someone close to you at school suddenly disappeared and doesn't know where, why do you think?