Assassins X Heroes (HxH X BNHA)

The first thing Killua felt was pain. It laced through his back and shoulders. The second thing he felt was rain as it pelted down on his face. Suddenly there was a bright light shining through his eyelids. "the hell? Is he dead?" Killua groaned, opening his eyes. As soon as he did so he felt a splitting headache. "fucking god-" He sat up, rubbing his head. "why does it feel like I fell off a cliff?" Killua looked around to see what looked like an old man with a scarf? His flashlight hurt Killua's eyes so he couldn't see well but he knew there was another person. "hey kid are you alright?" he asked. Killua chuckled "It kinda feels like that one time-" he cut himself off. "wait where the hell am I?"
(note: the cover is not mine)