Monster High: Dead Tired Adam

Now here's Adam in Dead Tired Attire, he likes to read before go to sleep, but now he fell asleep while he was reading his favorite book, but sometimes he shed tears during his sleep because he has nightmares about the death of his parents and his brother's disappearance, he still mourn them and miss them a lot, he's difficult to wake up in the mornings because due to his duty of being Kamen Rider Warlock and use his magic constantly makes him sleep too much, so his butler Ludwig must wake him up opening the windows to let pass the sunshine to his room, if the sunshine goes directly to his eyes he will be covering his eyes and yelling to Ludwig to shut the window.

Can you guess the title of the book in his hand?

Adam's Profile: [link]