The plane crash and subsequent ice might have killed him, but that doesn’t mean he isn’t still around, haunting those he cares about. And since the only person who can see him is Tony Stark, death sure isn’t going to be boring.

"Hey there, ghosts," Midoriya says, "it's me, ya boy." The dorms are haunted. Shenanigans ensue.

Everyone knows about Duo's ghosts. He collects them. But when he collects them, they feel lighter somehow. Some ghosts stay longer than others. For Unnatural November.

"I had another dream about Charles last night," Jack tells Anne over lunch. "So?" "So, this is the third time in as many days. What do you suppose it means?" Anne stirs her soup disinterestedly. "It don't have to mean anything." (The Ghost!Charles story nobody asked for.)