It's not bad, but honestly it's not good, it's absurdly boring ... The protagonist has no feelings, he has no interactions with other people (besides caitlyn), the chapters seem more monologues, it's like there is no "substance", the chapters are empty, there are only descriptions, descriptions of powers, descriptions of moments, description of "missions" ...
It's like a giant piece of the novel is missing, the author is relying only on the series, so he jumps from moment to moment, it's like he doesn't follow a straight line, so there is no character development or anything like that, the MC only exists to eat, to become stronger and to be a character in "The Flash" series...