He didn't expect the Queen Jawfiend to kill him so soon. He didn't even feel any pain, or it was that his shock had numbed his pain or his nerves were too worn out to even transmit the pain.
All he knew was that his vision was getting darker and a weird feeling in his heart before everything went dark for him.
*KREEE!!*
The Queen Jawfiend suddenly stumbled back, letting out a screech of distress and pain while pulling out its stinger from Arion's heart.
It was as if it ingested some poison instead of blood when it tried to suck Arion's blood from its heart.
It wanted Arion alive all this time since it smelled how tasty Arion's heart was, especially when he possessed the Darkness Aspect, and it coincidentally had the Darkness Aspect as well.
Thus to develop its aspect, it was looking for pranic hearts with the Darkness Aspect and told its children to immobilize Arion instead of killing him.