Corey could count the number of times he had actually felt true fear.
One was the first day their entire world changed. He could remember the fear he had when he faced the first revenant he encountered.
He could remember the unnatural fear he developed towards doors because of the monsters he encountered behind the doors of his dormitory.
He could also remember the fear he had when he faced a mere fraction of the killing intent of the Defying Paragon, the Ancestor of Paragons.
Last but not least, he could remember the despair that threatened to swallow him whole when he realized that he would not be able to save his sister and that his parents died.
His experience with a fraction of the killing intent of the Paragon Ancestor was the second biggest fear he had ever experienced, and his failure to save his family was his biggest.