The World seems Realistic but Why do I have a Leveling System?

On the next few days, Sheila had been doing nothing but continuously grinding in the Trial Tower when she gets home after the school end. Sometimes she would also bring Ria along to level up together. It was not long before she met the boss of the Third Floor. It was the same as the Second Floor but with an addition of two Goblin Fighter on each of its side, protecting the Goblin Shaman.

"Sword Slash!"

The goblin tried to avoid her attack, but it was too slow before getting cut in half as Sheila went to other goblins. This time she wanted to go all out and see how she fare against them. Sheila wanted to know how exactly strong she had become. Killing a mob couldn't precisely pinpoint her full strength as they were simply too weak for her; that was why she wanted to test it on the boss instead. 

The goblin shaman silently chants while the two Goblin Fighter was protecting it from getting disturbed by Sheila. After Sheila had finished off all the mob, A ton of Fireball spell assaulted her, but she was able to stop it from exploding on her by sending out a wind slash from her sword. 

"My turn, Fire Arrow."

An arrow made out of flame materialise in front of Sheila, and shortly, it flew toward the Goblin Shaman. But the Goblin Shaman hide in the back of two Goblin Fighter, the Fire Arrow couldn't hit its initial target due to Goblin Fighter using its body as a meat shield. With a pretty big and robust body, the Goblin Fighter was able to defend against her magic strike with only getting burned skin. Seeing it with her two eyes, Sheila didn't say anything much but instead firing out another Fire Arrow at it but this time chantlessly(she never did, only mutter the word=chant to her).

And it was again stopped but this time by the sword of the Goblin Fighter while Goblin Shaman was chanting on another spell. One of the Goblin Fighter rush toward her before slashing the sword at her, but Sheila used her sword to deflect it to the side before moving to another place as another fireball soon assaulted her previous spot.

"Fireball."

Once again, Sheila fire out her magic spell but this time with Fireball. A stronger ball of flame at the size of her head materialise in front of her, Sheila was shocked for a while seeing how big the fireball is. Was it due to her intelligence attribute getting higher? It has to since it wasn't as big as this when she used it before. The Goblin Shaman was also quite alarmed at the sight of her fireball and immediately instructed the two Goblin Fighter to disturb her chanting. But it was only sending its two minions to their death as Sheila didn't need to use any chant to conjure her spell.

The two Goblin Fighter idiotically rushed toward Sheila, and when they were closer, both of them swing their sword at each side of her as Sheila was unable to defend herself since she was chanting her spell and she was cut in half by them—that was what the Goblin Shaman thought was supposed to happen. What actual transmits in the battle was the two Goblin Fighter was engulfed in the Fireball spell. And the aftermath was only one of the Goblin Fighter surviving as it wasn't hit directly like the other one.

『 You have killed the Goblin Fighter Lv.10! 』

"It's not just the size; it has also gotten stronger."

Sheila noticed a difference between the current Fireball than her previous one. It's good to know that her magic spell also gotten a boost as she increases her intelligence. 

『 Fire Magic has leveled up! 』

"Ooh? Nice!"

She wasn't expecting it to level up at this moment but since it did, good! But she didn't sit back to check out the detail as she was currently still in the heated battle. While avoiding the attacks coming from the Goblin Fighter and Goblin Shaman's spell, Sheila was trying to pull out the mana potion from her inventory. Once she found her chance, she immediately distances herself from the Goblin Fighter and quickly drinks the mana potion. The mana which was lost was being restored in no time and eventually, she fires out another Fireball at the Goblin Fighter who was running toward herself.

『 You have killed the Goblin Fighter Lv.10! 』

With the two meat shield gone, the Goblin Shaman couldn't protect itself from getting cut in half by Sheila's sword. It desperately fires out a spell after another which Sheila avoid it as she runs toward it. The last thing it sees was a flash before it was slice into two.

『 You have killed the Goblin Shaman Lv.12! 』

『 You have leveled up! 』

"Fuh~ I'm stronger than I thought I am. Magic is cheating after all."

Her strength was already powerful enough when she was only using a sword, but with magic included, her real strength twofold stronger. 

『 Disguise skill has leveled up! 』

"Finally."

She was wondering when this would level up since she had been using it ever since she entered the Trial Tower. Her current appearance was a long red hair and dark red eyes coupled with a new beautiful facial. It was the disguise that she once used when she walks out to meet Yuna at the front of the school gate. She had been using this appearance whenever she entered the Trial Tower afterwards. This skill is vital in one of her plans, after all.

Now that it has gotten to level 3, she tried to see if there's anything new. And the result is very shocking. She couldn't just change her face and body structure better; she could also change her vocal cord to sounds like someone else. She doesn't have any word to say other than freaking cheat. How is it not cheating when she could basically disguise as someone else followed with their voice, can someone tell what the difference between her and the original owner is? Unless someone knows the original owner, but to everyone else, she could trick them easily.

Yes, it was just like the software that has been viral around the internet about how it could be used to combine and superimpose existing images and videos onto source images or videos using a machine learning technique known as generative adversarial network. She had come across a lot of funny videos where they used the program to add the celebrity's face onto the face of others. It was pretty hilarious. But of course, there are also a group of people who used for their selfish desire. 

Her disguise skill is basically that program itself that manifests into a skill. Obviously, it was more powerful than a program created by human and machine. With this, she could go forth with the first part of her plan. 

『 Sheila LV.16 』

『  HP: 75/115  MP: 130/200

GOLD: 1530

  —STR: 25 —INT: 40

  —AGI: 21 —VIT: 23

  —LUCK: 10(+2) AP: 10  』

Should she go for mage route specifically? Or jack-of-all-trade? To be honest, she prefers the former, but after all that she went through, she thought that the latter was more of a better option. But should she really go toward that route? Her eyes narrowed as she ponders heavily on the topic. But soon she gives up and decides to keep the attribute points and leave it for the future. If she thought more about this issue, it would only bring headaches. And even more, the plan is a lot more significant than this problem. 

『 Do you wish to exit the Trial Tower? 』

    『 Yes / No 』

She could actually ascend to the Fourth Floor but decides to quit it for the day. She had to look for Ria to see whenever she has already completed her work. The plan wouldn't be able to move forth if she hadn't done it after all.

***

The next day at school.

"Good morning, Senior Sheila!"

A wild Yuna has appears at the front of the school gate! She used a greeting, and it was very effective!

"...did I not tell you not to call me by senior? You can just use my name."

"Can I have lunch with you later, Senior?!"

"You didn't even listen to me, sigh. Fine."

What a headache, she had thought it wouldn't be much of a problem when she had come to sort a deal with Yuna but Oh, how naive she is. Sheila didn't even notice how the other schoolmates were sending odd gaze at her and the stalker behind her who followed closely instead of hiding behind a pole or something. It wasn't that she didn't notice; it was more like she was used to it. But Sheila could feel one gaze that harbours ill intent toward her for some unknown reason. She tried to look around her surrounding, but the gaze immediately vanished entirely. She muttered softly to herself in a confused manner.

"What the hell just happened?"

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