Two Answers

Sunny stared at the painfully familiar chest, his black eyes full of fright and venomous resentment. Of course, he had recognized it instantly. It was his old nemesis, the Mordant Mimic… the vile creature that had almost eaten him alive once, in the distant future.

Granted, he had ended up being the one to feast on the flesh of the abomination, instead. Which had been a traumatic experience in and of itself.

But who was to say that he would be able to kill the Fallen Devil again? Sure, Sunny was much stronger and more experienced now. He had more cores, thousands more shadow fragments reinforcing them, much better equipment, and inhabited the body of an actual demon. But there was also no Crushing in this era to help him hold the creature down while the Broken Oath did its job.

Thankfully, the bastard seemed to be behaving itself, maybe out of fear of its master. Actually…