Culpability
When Danny became the Ghost King he left many things behind: a normal life, his friends, his parents, his sister. All he had left were his space models, glowing stars and some things that he could read.
The halfa knew the situation was not that bad. The ghosts were very friendly and his loved ones could visit whenever they wanted. Time in the Realms was strange, and it would seem like an eternity but they would come eventually.
Seeing their King so down, the ghosts presented him different interests to distract him (Teens needed entertainment, right?) and thanks to Clockwork (who was accused of cheating) Danny found out how much he loved comics and how much he had missed them.
Seeing that this made their King happy, the other ghosts provided thousands of versions of those comics. Danny's mentor warned him to take comics seriously, but he dismissed the comment.
The Realms were infinite and since ghosts could go through the (now stable) natural portals or ask Wulf for help, collecting comics from different dimensions wasn't difficult. They found at least 5199 versions of the Justice League comics the first time. Their King would be happy.
Danny even participated in some of the polls with the help of Clockwork! One of them was called "Kill Jason Todd?" The king thought it was ironic to ask a dead man that and marked yes. He was delighted when volumes of "Red Hood" appeared a few weeks later, Jason was amazing!
Of course, every action has its consequence. When he was summoned to help with a problem in another dimension, the king quickly noticed that the Justice League was real, the same one from his comics. And his favorite character, Red Hood, was looking at him with a frown.
Taking the situation in, Danny felt the weight of guilt on his head as the boy's toxic green eyes looked up at him. He...had he killed him? Did he supported his death? He remembered the 50/50 poll results initially, and how his vote decided the boy's fate.
Even trapped in his castle and just reading comics all day, Danny kept messing things up.