The King's Courage.

 The black miasma began to form in front of Bel and at once formed into a pitch black rod.

Bel grabbed it, he flew and smashed the chains binding the red Knight with the rod, the chains shattered.

 "That's right, I don't know much about Eurekyl but it's definitely weak against dark magic, and that rod right is a magical weapon" she said, "now come!! Free us!!" She said.

But instead Bel turned back towards the water serpent.

 "Heeey!! What is that bastard doing?!!" Ariel yelled.

 "Looks like he's thinking of fighting the seven headed serpent himself." Godeye said.

 "The fuck!! Why will it? That's a monster as dangerous as a wyvern as though that is not enough, it has entered the upper echelon, it can easily beat Azes as it –" 

~Swoooosh~ 

As Bel disappeared a pitch black line pierced the air from where he was and past the water serpent. One of its head fell into the water.