I'm The supreme Fairy King

'Monsters... don't have a simple way to measure up their strength and energy,' the old man paused before adding, 'see your Don here for instance, he had a large amount of power stored inside him with such a small body and young age. Monsters work in a much more complicated way than you think.'

"So the bigger the size the higher the energy, right?"

'Wrong,' the old man firmly said, 'haven't you heard what I just said? You can't judge them using the same methodology of magicians.'

"Then... how can I know if I can absorb a monster's energy or run away from it?" Jim was puzzled by this.

'The only way is to fight it first hand,' the old man said, 'this way I can help to inform you roughly of my estimation.'

"Roughly?" Jim noticed the strange word his old man used, "that doesn't look promising."

'At least it's something,' the old man sneered, 'better than running around and trying your luck. Sometimes your luck might be bad.'

"Well..." Jim didn't speak while glancing over Don. "I got him."

'Not enough in such cases,' the old man sighed, 'your pet works on affecting the external environment, not the power of the energy of your opponents. Did he change the power of any monster or disciple you fought so far? Even once?'

Jim found some logic in the words of the old man that made him contemplate for a long minute there before saying:

"Then teach me how to do it and I'll try to keep myself under control."

'You better be,' the old man said, 'to learn this spell isn't hard for you. You just need persistence and full concentration.

"Got it."

'The idea is simple, you make a wound on both hands of yours and then let the blood drip over each other.'

"Then?"

'You will make a hand seal before you release your energy and hit your opponent,' the old man paused, 'but you need to know you are going to suck dry the opponent's energy. A sacred bond will be formed between the two of you. No matter what happens you won't be able to use both hands until one of you dies.'

"..."

Jim thought about the old man's words once more and found the issue here. "So I'll be tied with this spell?" he couldn't help but ask, trying to confirm his guess.

'That's the way to do it.'

"But... this looks quite unrealistic," Jim hesitated, "I'll use this amidst a battle, something that I can't control."

'So you have to do it when you and your foe are alone in the area.'

"Even that..." Jim paused as he couldn't imagine how he could control such a thing, "I can't guarantee that someone will come and attack me."

'Then you should do it with your team or allies, or... you shouldn't use it at all.'

Jim was hit with this bitter fact right in his face. "C'mon, isn't there any other cool spell but this impossible one?" he asked with some anticipation.

'No, the others require you to have much more magic energy than you currently have,' yet the old man spilled cold water over his fire and killed all the hopes he had.

"Sigh, no other option then," Jim shook his head before adding, "tell me the hand seals."

'Are you going to do it?'

"Better to have a last resort than having none at all, right?" Jim bitterly smiled, "tell me the seals. I doubt something like this spell will be learnt in a blink of an eye."

The old man started to tell him the seals he had to do. In fact the seals were simple. A knife moves with his right hand and a rock moves with his left hand before both would get entangled together with fingers interlinking between each other.

"That's it?" Jim asked in doubt, "no fancy moves or hard to pull seals?"

'The hardest part in the spell isn't in performing it, but the decision of using it or not.'

Jim knew what the old man was referring to, however when he started practicing he knew his earlier doubts were true.

The moment he got the two wounds in his palms opposite to each other and started forming a seal, a great repulsion force erupted from his hands. He wasn't able to continue forming the hand seals and had to cancel the spell.

"Boom!"

Like a bomb his two drops of blood exploded, sending him flying high in the air and crashing into the closed wooden door.

"Damn it!" Jim stood up to find himself returning again to the stadium, "what happened?"

"Are you ok, master?" Don hurriedly came to him with a worried look over his monstrous face.

"I'm... alright," Jim lied, "what happened? Why did I return here?" he asked the old man once more.

'Your failure released a strong pulse of energy,' the old man said, 'always remember, failing to do any strong spell will have a strong impact over you in return as a price.'

Jim felt something warm passing over his face. "Blood?!" he was surprised to see a thin line of blood coming down from the corner of his mouth.

'You got hit by the energy,' the old man explained, 'it's normal to have injuries.'

"But... it's my energy!"

'And you failed, so it exploded,' the old man said with a short laugh, 'don't tell me you are invincible to explosions even if they were created by your hands.'

Jim remained silent for a moment there before sitting on the ground once more. "Let's continue training then," he closed his eyes and regulated his ragged breaths before entering once more inside his closet world.

"Boom!"

"Boom!"

"Boom!"

It proved so hard to control that extensive repulsive force created by his blood and hand seals. "Damn! I didn't even succeed once!"

He was pissed off but the old man didn't say anything to console him.

'Be aware that repeated failures will result in a serious wound,' the old man said, 'and you didn't fully heal from the first injury you had.'

"I... what can I do then?"

'Try to train here as a change,' the old man advised, 'this world is much sturdier than the closer world and here you can heal faster.'