Catalyze

Dudian's brows wrinkled as he raised the head of the skeleton and pulled out the arrow from its forehead. It was an ordinary iron arrow and he wasn't planning to use mercury arrows to hunt them. It would be a complete waste and the number of mercury arrows were limited so he tried to save as much as he could.

The silence of the subway was disturbed by the loud roars of two skeletons. As both of them fell under Dudian's arrows another roar echoed. Dudian saw a skeleton whose body was cut in half was eating the splitter's meat as its face was full of flesh and blood.

Dudian was startled as he saw its appearance. Don't they use their stomach to digest the food? Maybe they evolve differenly after eating the blood and flesh of the splitter? Do they digest the food with a different organ rather than stomach?

He took out another arrow and aimed to shoot as the thoughts quickly passed in his mind.

Puff! Puff! He killed another skeleton.