Arriving at the combat field, Erza quickly equipped herself with her usual battle armor and covered her body with the Cloak of Aztaroth. The cloak was the reason she dared to set the difficulty at level four.
Her first opponent was a fellow human, a thief at early King realm. Just like Beel said, he did not detect Erza presence at all.
Erza quickly launched a slashing attack to his neck. However, just as the sword touched his neck, the thief swiftly backed off while sending a random counter attack based on his instinct.
He managed to avoid a fatal wound and even ended up landing a kick on Erza stomach. Ignoring the small wound on his neck, the thief quickly scanned his surrounding to find where was his attacker.
Nevertheless, he still could not detect Erza who was actually rolling on the ground, holding her stomach in pain. The cloak helped to hide her presence even from her surrounding. There was no mark on the ground even though Erza was laying on top of the grass.
Erza then quickly casted 'Rewind' to soothe her pain. Soon, she was able to get up and prepared for her next attack.
Learning from her mistake, this time, Erza directly went in full power. She casted 'Double Acceleration' on herself and 'Time Stop' on her enemy just when her sword arrived at her opponent neck. As a result, the thief did not have enough time to react and was beheaded.
This was her first time killing a person. Even though it was not a real human, the formation ensured that the experience was very similar to a real battle. There were blood and gore.
However, Erza surprisingly did not even bat her eyes. In fact, she was smiling! She never felt more alive than what she was feeling right now. After all, as a half demon, killing was deeply ingrained in her blood.
Using her time ability on a King realm expert took a great toll on her body. Erza was left panting heavily while looking at the corpse in front her. She just killed a King realm expert! If this was known to the outside world, this would surely cause a great commotion.
No wonder Beel said that she should never let the demons knew that she possessed the Cloak of Aztaroth. This was truly an overpowered treasure!
'But why did big brother help me? I'm sure if he wanted it, I would not be able to hold on this cloak.' Erza pondered silently in her heart.
However, before she could come up with a possible answer, her next opponent arrived. It was still a fellow human, but this time her opponent was a Magic King.
Erza slowly caught her breath and starting to plan her next move. She activated her demonic black lightning form and dashed toward her opponent. This was the same form which she used to defeat Paul. She was going for a stab.
However, just as her sword touched his clothes, the magic king reacted very quickly by entering his invulnerable form, a body made from water. He was actually a Water Magic King and already able to do Instant Cast.
Next, he casted a wide range magic 'Sea World' which turned everything around him to sea. Erza was caught off guard with the environment change. She could hold her breath for a long period of time, however her movement was significantly affected.
She knew that her opponent would not be able to maintain his invulnerable form and this 'Sea World' for long. Therefore, Erza was patiently waiting for her chance while maintaining a safe distance from the magic king.
Unfortunately, things did not go as she wanted. Unable to locate his opponent, the Magic King then decided to cast another wide range water magic 'Whirlpool'. Unlike 'Sea World', 'Whirlpool' was an attacking spell. Coupled with the fact that they were currently in the sea, Erza quickly found herself in imminent danger.
She was starting to lose control of her direction and the water pressure was squeezing every inches of her body. Soon, Erza was dizzy thanks to the spinning movement and some water started to force themselves into her body from her nose, ears, and skin pores.
An attack released by a Magic King was not something that a normal knight was able to withstand. Fortunately, Erza was not a normal knight. 'Ignite!'
Next, her hair turned red and flames started to appear all over her body. It evaporated most of the water around her, thus reduced the pressure on her. Erza then continued to fight against the water pressure in her black lightning flame form.
After a while, the Magic King stopped his attack and everything went back to normal including his real body. Erza saw this as an opportunity and launched an attack to his chest. Just like before, the magic king entered his invulnerable form as soon as her sword touched his clothes.
However, this time, Erza was faster. Hence, she managed to leave a wound on his real body, though it was not deep nor fatal. The Magic King quickly casted another wide range attacking spell 'Atlantis Might' to catch his attacker and followed by 'Water Tornado'. He could not detect his attacker but he believed that he would deal damage to her in this way. And he was right.
Even though her current form was very strong, it was not enough to contend against someone on the whole higher realm. She needed to use her time abilities, but she tried not to depend on it too much. She wanted to find another ways. She wanted to temper her body, skill, and instinct.
As her vision started to blur, Erza decided to transform into her demon form! Curved horns grew on top of her head and there was a cute tail on her back. Her skin colour slowly turned darker and there was a strong baleful aura coming from her. Flame and black lightning were dancing around her. She truly looked like a demon princess.
Her power, defence, speed, resistance, stamina, perception, and recovery rate were all increased. Slowly but surely, Erza was able to withstand the Magic King's attack.
She waited until he was back in his original form and then launched another attack. This time, Erza managed to leave a deeper wound before the Magic King was able to transform into his invulnerable form.
As a water mage, he was capable of healing his own wounds, even though it costed his stamina. As a result, soon the fight turned into a war of attrition.
On the outside, Aston was really worried about Erza. He wanted to check her situation. However, he remembered his promise to her. He could only hope that Erza was alright. He believed that Erza was not a fool. She definitely had her own reason and calculation.
Night came and Erza walked out from the training hall with bruises, wounds, and injuries all over her body. In addition to her disheveled hair, she also could not walk straight and anyone could see that she was dead tired from her eyes.
Everyone, whom she passed by on her way back to the dorm, were totally bewildered looking at her condition. They wondered how could she ended up in her current state.
Erza went straight to her room and slept. She did not have any strength left to even eat her dinner, nor took her shower.
Moreover, she failed to realize that she was being followed since the time she left the training hall.
Floating above the girl dormitory, there was an old man looking at Erza direction with furrowed brows.
"This girl was too careless." Sir Adam sighed and left.