“The Magicians” author Lev Grossman has been sharing tales about the 2019 Vanity Fair review of The Rise of Skywalker which was the first big feature written about the Luke Skywalker saga, Indiewire reports. One of the stories he told Inverse is about actor Adam Driver’s backstory for Kylo Ren that got left out.

“I think probably the thing that was missing for me, I wanted to see more about Kylo’s childhood,” Grossman said. ”I thought they would go back to show us more about why he turned to the dark side. [Adam Driver] had a lot of interesting thoughts about Ben Solo’s childhood.”

“This is actually something Adam Driver said,” Grossman continued. “He said that both Han Solo and Leia were way too self-absorbed and into this idea of themselves as heroes to really be attentive parents in the way a young and tender Kylo Ren really needed. There wasn’t really that much of it in the movie so I just think we have to assume his childhood sucked.”

Indiewire‘s hypothesis is that Kylo Ren’s mental trauma seems to be so much more than just about Luke Skywalker’s betrayal.