Devouring Black Hole

The spear cut through her chestplate and passed right through her chest, leaving nothing behind. The ground which it crashed into looked like it had been trimmed off along a part of the boss's chest where the heart was supposed to be. 

Just like John had guessed, it wasn't going to be enough. 

The hole had already started to heal and the Boss was already moving towards him, She crouched down, and began to gather air under her legs before propelling herself straight at John who was in the air 

But before she could reach him 

*BOOM* 

The loud sound of thunder roared throughout the room as a Thunder beast bit on to her and slammed her down 

"Mihi Vindicta: Kirin Scriptor... Sorry." Translation: Kirin's Revenge 

The blue lightning beast with horns on it's head which seemed to have the body of a thin dragon. Roared as thunder echoed throughout the room and slammed the girl on to the floor of the Arena, cracking parts in the process