Cute and dangerous system

The buzzing sound of the alarm clock filled the room, which was decorated in black and red.

In the disarray of the bed, a teenage girl lay, her blanket hovering over her face and her hair scattered all around. As she groaned, she struggled to sit up and turned off the alarm clock.

"Happy birthday to you," she heard her grandfather's voice and looked up to find him standing at the door with a huge smile on his face, making his way towards her.

"GP," she called with a barely audible voice.

"Happy birthday, my dearest," he said, walking closer and placing a kiss on her forehead while cupping her face in his hand. "Go and freshen up and come down for breakfast. After all, it's your sweet sixteen party, and there will be no training classes today," he said, looking at his granddaughter's sleepy and confused face.

"My... my... sweet sixteen... training classes?" she asked in a daze.

The old man took one more look at his granddaughter and couldn't help but sigh. She had always been a sleepyhead, even though she excelled in what she did. With one more year added to her age, he hoped she would start acting more mature, especially before his useless son ruined both her and her mother's lives forever.

"I'll be waiting downstairs. Get dressed and come for breakfast," he said, giving her the privacy she needed.

Bella took one more look around to make sure she wasn't in one of her fantasies. She stood up from her bed and ran towards the mirror to find herself back to being sixteen years old.

But she was meant to die after being shot in the chest. Wasn't she?

She quickly undid her buttons to find not a single scar on her body, except the ones she received from being beaten up by her father and the training classes.

"I have been given a second chance," she said in an ironic tone while looking at herself in the mirror.

It was exactly this time of the year that her world turned inside out. Her father had decided to bring his mistress and her daughter to the house and chased both her and her mother out. They were taken in by her grandfather, who made sure she received training to become part of the mafia. However, she was tired of those training sessions and made a wish... the wish. If only she had made the right wish, things wouldn't have ended the way they did, she was sure of that.

"Ella Carson... I asked you to make sure I never find my way back, but you failed. Now watch as I wreck your entire world," she scoffed.

She wasn't going to spare anyone this time, especially those who caused harm to her loved ones.

She smiled like a psycho and began jumping while making a spin.

"I'm back... I'm back... I'm back!" she kept screaming and laughing.

She made her way towards her walk-in wardrobe to prepare herself for the day. After all, it was her birthday, the day that unveiled a ruthless being, the birthday of a female devil, and the next Mafia queen.

A devilish smirk appeared on her face again as thoughts about being the first mafia queen crossed her mind, but her smile didn't last long.

Suddenly, she heard a very loud buzzing sound that made her wish she could switch her head with someone else for some time.

[Buzz... buzz... buzz]

The sound died down a bit, only to be replaced by a painful sting. She held her head in both hands, falling to the ground and pulling her hair, but it didn't reduce the intense sensation in her brain.

She clutched her hand and screamed loudly, hoping someone could hear and help her, but not even a single sound escaped her room because it was soundproof.

[Binding with host complete in 10... 9... 8... 7... 6... 5... 4... 3... 2... 1... system automatically updating in 5... 4... 3... 2... 1]

Before she could comprehend what was happening, there was a sudden snap that made the pain subside.

Bella sat up, panting for air, with beads of sweat on her forehead. She looked around to find no one else in the room except herself, and the air-conditioner was on, yet she was sweating profusely.

"What really happened?" she asked herself.

She had never experienced any mental issues before, and neither did she now.

Or did she?

Could it be that the rebirth caused her mental state to become unbalanced? She questioned herself.

[Ding... ding... ding... processing the world for any possible danger... 10%... 30%... 50%... 80%... 99%... 100%... done]

[Accessing host... done]

[Backing up host's memories in process]

[Possible danger... none]

She kept hearing voices saying different things as she caught her breath.

[Welcome, Bella Carson, to the world of revenge. I'm your cute and sweet system, Butterfly.]

Bella stood up, becoming more alert. "What do you mean by the garbage you just spilled?" she questioned, getting into a charged position.

[Ahem... there is no need to charge. I'm not going to fight you. After all, I share the same body as you.]

"Excuse me?" Bella asked, raising an eyebrow, confusion visible on her face.

[Let me introduce myself properly, dearest host. I'm Butterfly, a cute but dangerous system. My duty is to guide and bring those with unjust ends back to the past so they can take their revenge and also take their rightful place in the world.]

"So, you mean you are going to help me get my revenge?" Bella questioned, ensuring she heard correctly.

[Yes, Bella.]

"And how many have you helped complete their... you know, whatever shit you said?"

[Unfortunately, zero, because they were not the right host.] Butterfly tried explaining, but it was too late, as Bella had already fallen onto her bed in disbelief.

"Then what makes you think you can help me?"

[That's because there is something special about you, and your mission isn't just to take revenge. You'll have to save the world.]

"Save the world, you say? From what? Another world war, or maybe a nuclear bomb explosion? Or some apocalypse?" Bella questioned as things weren't making sense to her.

[From demons.] Butterfly chuckled.

"Demons, really? Is that the best you can come up with?"

[I know it sounds crazy, but you'll have to admit that your life has been through some crazy shit, and that's why you're the perfect person for this crazy mission. Firstly, you'll have to get your revenge and gain enough power to be able to save the world.]

"And what if I fail?" Bella questioned coldly.

[Bella, you'll have to know that your life is now like a game. It's either you win or lose.]

"And I have no room for losing," Bella scoffed.

Since the system claimed it is going to help her get her revenge, why not give it a chance? After all, there is no harm in trying.

[One more thing, Bella.] "What is it?"

[In this mission of yours, you have only one rule: never fall in love.]

"Well, that's the best rule I've ever needed, as I don't plan on doing so" she replied with a smile

If she didn't fall in love with the guy her father sold her off to, maybe she would have had a chance to kill him and become the queen..

But there's no room for regret after all she got a second chance to life.