The story is good and has potential, but from the 15 chapters that the novel have, 7 chapters are just him dating Jean or doing thing with her.
I know the synopsis said that the novel will have harem, but with only Jean we already have just half of the plot, what will happen when he really have a harem? We will have 1 plot chapter and 10 chapters of him dating and interacting with the girls?
Not even mentioning that this Jean is just an OC character with her powers and appearance, as her personality has nothing related to the real Jean Gray...