After he fell down the stairs because of an explosion, Kamina was trapped in a haunted labyrinth. He's been in here seemingly for hours now and he still hadn't found the exit. The labyrinth doesn't seem to be big, but it repeats over and over again, no matter in which direction he goes. He punched the wall. It didn't move a bit, but it hurt like hell. Not what he expected. It was blue and it felt like air. As if his hand would fall through with the tiniest amount of pressure, but when he tried it the opposite happened. "What the hell is that? Who the hell do you think I am?" He punched the wall again, but the same happened. It's not the biggest wall, but when he jumped, it seemed to grow. It was always tall enough so he couldn't take a look over it or climb onto it.
Then he saw a ghost. It was many times bigger than Kamina. It barely fit between the walls. Kamina wondered why it was afraid to touch them or why it didn't just fly away. He didn't get a good look at first, but then he saw it: the ghost had metal teeth. They were pointy and shiny and they deformed its mouth. Kamina ran towards the ghost and tried to punch it. He fell straight through, as if it wasn't there. "Ah, I get it, it's a ghost after all! I have to punch the teeth!" Then he proceeded to do so and the ghost vanished together with the teeth on the ground.
He wandered on and punched many ghost's teeth. He was getting hungry, so he tried to eat one of the many small yellow balls on the way. They tasted like plastic, but at least they were eatable. After a while, he found a bigger yellow ball, sitting in a corner, scared.
"Oi, you there, what's going on here?"
"Who ... who are you? Are you with these ghosts?"
"You mean the ones I punched in the face? They're kinda annoying."
"Y-you punched them in the f-face? And they didn't eat you?"
"No, I punched their teeth out first. Then they vanished."
"They ... vanished? You mean it's possible to protect my children? Tha- thank you! Thank you very much for that."
Then the yellow ball got up, ran around, collected the smaller ones and hid them in his mouth. He seemed to grow a bit while doing so. When they met another ghost, he almost got eaten, but Kamina intervened in time. They continued to collect the small ones and Kamina punched the ghosts. When the yellow ball found a child that was a bit more grown and stuffed it in his mouth, he grew to a gigantic size. Kamina climbed on him. "Eat the sky! Now you can defeat the ghosts!" Then he woke up at the bottom of the stairs and wondered what he was doing there.