I was finding a book in the library

 Suddenly,

 A pile of book fell on my head and I died right? Huh! I did not die?

 The next thing,

 I was falling down from the sky.

 Then,

 I fell in the ground but it was strange that I did not took any fall damage!

 Then,

 I looked around and saw five old men talking to themselves

And

 I heard they asked me, am I the summoned hero they summoned.

 Before I could even answer I fainted on the ground.