Review Detail of please_be_gentle_ in Douluo Dalu: The Legend of Heavenly Ruler

It was a five star ff till he didn't told them that they are fictional characters. Telling them about his past life is fine but I don't get the reason to tell them they are fictional characters only for him to convince them later that they are real to him. I mean if you know that you have to convince them later that they are real people not some fiction, just shut your mouth and save them from some existential crisis. Sometimes ignorance is a bliss you know.