Fighting ghosts had caused his grades to drop, to the point where some were barely passing. That's why Mr. Lancer recommended him to get a tutor or attend a remedial course, something Danny considered quite absurd, how was he going to be able to get away from Amity without it getting destroyed?
Jazz didn't seem to find it absurd at all, and despite his complaints, the halfa ended up at "summer camp" to boost his knowledge or something (Sam and Tucker seemed pretty sure they could handle the ghosts on their own while he was gone), at least, they had an activity about stargazing, for which Danny was grateful.
In the camp he found someone just as bitter as he was, but strangely excited. "Jason Todd" was grumpy about attending and having to be away from his family, but he was excited to learn new things. Danny found it endearing.
They both ended up becoming friends, and reminding each other of the things they were missing. At the end of the camp, it seemed that life had returned to the eyes of the tired halfa. It was during his last night at the camp, when Danny was showing the boy the stars, that Jason kissed him.
Unfortunately they didn't have much time left so they decided to keep in touch and send each other letters. Each headed to their respective city with a smile on their faces. The happiness Danny had earned was gone as soon as Jason's letters stopped coming.
He checked the Gotham newspapers with curiosity and was furious as soon as he saw the news of Jason (sweet, nerdy, and rude Jason) being killed in a fucking explosion. He flew at full speed until he found his grave, and helplessly began to cry. Whether he was angry or sad, he didn't know.
Ectoplasmic tears fell on the grave and unknown to the halfa, they were absorbed by the body. When Danny noticed that the tomb was beginning to glow the same toxic green he knew he couldn't help but feel hopeful. But it wasn't enough.
He didn't know if it would work, but on instinct he drew ectoplasm directly from his core and propelled it into Jason's tomb, hoping it would help. Danny wondered if he was breaking a rule in the Realms but he didn't care.
When he heard his friend's weak heartbeat (Boyfriend? Lover? He doesn't know, they never put a label on each other) he began to dig up the dirt around the grave, but before he could finish, time stopped and Clockwork looked at him with a frown. His mentor looked annoyed, but strangely comprehensive as he directed him to the Clock Tower.