The World's most Overpowered Side-Character

"Someone is coming." Ikaris raised her head and looked at the door of their cell, glaring and grimacing.

"Let me handle it this time." Dina stood staring at Ikaris. "The last time you fought until your eyes bled, do not strain yourself any further, let your mana recover, it is slow but-" she stopped when the locks outside of their cell rattled and a grunt came from the other side while the door slowly creaked open.

"Out both." A loud groggy voice echoed, followed by the stench of raw fish breath.

"I'll use pulsar." Dina raised her hands and formed a triangle with her index and thumb fingers. "I'll blast a hole through this whole castle and destroy everything before me!" She sneered as her mana started forming.

"If you do that you will take forever to recover without Arkadia-"

"It'll be fine, of you're right, of Sol really came then he'll know, I believe he'll come."

"Dina that is a gamble." Ikaris stood and grabbed her hands, breaking her formation and shaking her head. "Save mana, as much as you can, do not reveal such sophisticated powers to them they might favour you." Ikaris turned her hand to the door when the impatient fish demon swung the it open with a roar and intruded.

"Instead, be barbaric."

"Infernal magic, explosion!" The room heated before the fish demon was sent flying from a concussive explosion that tore him apart and completely destroyed the two cells opposite of theirs across the hall.

"What are you... How is a goddess able to harm demonkin?" The goddess behind the wall asked shocked, and Ikaris scoffed and walked out, staring down each side and taking a deep breath of the warm air.

"Using our Arkadian magic, we can still fight." Ikaris summoned black armour over her body and then looked at Dina who summoned her mage's staff and stepped out behind her. "Save pulsar as a last resort if we get cornered, it is too destructive with effects too drastic on your body to be used without caution, understood?"

"You have been fighting for days already, you couldn't possibly have that much mana to spare-"

"Just do as I say, as long as it's not a demon-god there's nothing the two of us can't handle, low, mid, high levels, nobles, we can kill them at leisure." Ikaris drew her sword and looked to the entrance when she heard the clatter of footsteps coming down the stairs toward them.

"Hey you, you said you have been here for a very long time, do you know the layout of this place?" She asked, and the goddess on who had been speaking to them went quiet and hid herself in the corner.

"Do not collide me in your madness, I do not want to be punished by the demon-gods, they are cruel and evil beyond-"

"I know the way out." The next goddess sharing the cell answered, standing and resting her hands on the door. "If you can protect me I can get us all out!" She screamed manicly, and with her scream several others from the hundreds of white cell-doors going all the way to the back of the dungeon started rioting and begging for freedom.

"Who are you?" The scared goddess asked from her corner, how do you have power here, did they not-"

"I am a goddess, a hero, a wife, and most importantly right now, I'm fucking pissed, didn't I tell you that there's nothing I can't do!?" Ikaris grabbed the lock and yanked it, but when the door remained intact she grabbed the entire door and tore it off the hinges with a roar.

"Then why do you depend on this unknown saviour?"

"To think that there were so many gods and goddesses being held prisoner here, my heart bleeds, I want revenge, but I know that only my master can truly face the evils of this world, so, we have to find him."

"Master?" The younger goddess asked stepping out and looking at Ikaris focus so hard her nose started bleeding as she extended her hands down the hall. "Is he some kind of origin being, the him above others that you who claims to be the strongest would call him master?"

"My master is no such being, he is a demigod that evolved from human, however he possesses a soul more powerful than any other god, he is the one who has killed demon-gods in the past and earned the legendary title of Godslayer." Ikaris answered, balling her fists and dragging her hands with a roar causing every cell door to rattle before they tore out of the walls and slammed into each other.

"That is who my master is!"

"You found the liberator?" The goddess before Ikaris gawked with her eyes filling and brimming with tears of hope. "Truly?!"

"Legendary?" Dina asked timidly. "Godslayer was a legendary title?"

"Aye, I have not even told him, the other gods did not want to either; Godslayer is a title that can only belong to one soul, he is that soul.

As long as master's opponent is a god of any kind he has the ability to kill them, whether they be multitudes stronger than he is, this is what happened with Sitri."

"That accursed power he used to bring her to the brink of death was the Godslayer in full effect ignoring the restrictions between divine and demon to grant unfathomable power, and as the legends foretell he will only grow stronger, I was lucky to find him." Ikaris wiped her nose and turned to the guards who were rushing toward them.

"Infernal-"

"Mana spears!" Dina beat her to the attack and instantaneously riddled every single enemy with an uncountable barrage of six-foot spears made of mana which all quickly combusted and tore them apart.

***

[I have intercepted the use of Arkadian mana; infernal magic as well as raw mana spears and mana explosion have been used within the last two units of time]

The system suddenly appeared in Sol and Arla's visions while they were in the middle of breaking down the information it was already giving them, and at the alert Sol sprung to his feet.

"I'm going-"

[The distance is that of two Arkadias, it will still take some time to arrive]

"Ikaris's mana is definitely sealed, otherwise I'd have sensed her and teleported over already, but if I can get close enough, I can still lock on to her presence regardless, all she needs to do is whisper a single word in my name and I will be there." He grabbed the ceremonial robe on his shoulder and tore it clean off revealing his usual armoured getup beneath it.

"A Demon-god..." The girl who had been seated after serving them in silence muttered in shock.

"Master Vestic, is it possible to take me with you?" Arla asked, and Sol closed his eyes and thought about it.

"The only way I can carry you across the vaccum is through a dimension, the system hasn't completely gained any control so it can't protect you yet and the only other means I have would be to let you stay in the Nightmare Prism and then release you when we get there, otherwise I could simply summon you upon arrival." He stared at her, and she thought of the latter option as the safest, but it would mean leaving her with an entire clan housing hundreds of demons.

"Ah..." She lowered her gaze and stared at the girl in the corner who continued to stare at Sol with shock and admiration. "I understand, but you must promise to return for me, otherwise who knows what may happen." She hugged herself and Sol's eyes narrowed.

"Did someone touch you?"

"Several have used my status as your servant to try and have their way, but the elder has been sticking his hand out for me over the last week. "Arla admitted and Sol sneered and snapped his finger causing the elder of the clan to appear before her.

"Wh-what sorcery-"

"Silence!" Sol snapped.

"Your lordship is..." The old demon fell to his knees when he saw Sol's attire and the way his messy hair had straightened across his back. "...A demon-god..."

"I am leaving Arla at your side, protect her, protect her like your life depends on it -as if she was your first and only child, I have somewhere I urgently need to be, and if anything happens to her I will know, and I will erase the very grounds of this clan and kill every single one of you, do you understand?.

"Absolutely your excellency, I will obey your order with the honour of my clan!"

"Your clan has no honour."

"Of course! We are nothing but dirt on the wayside, mere savages before his grace!"

"Arla," Sol looked at her. "On that note, you have my permission to protect yourself as well, if anyone tries to harm you, retaliate with full lethality; burn everything to the ground."

"Yes, Master." Arla lowered her head in a bow and then winced when he rested his hand on her crown.

"It was incredibly stupid what you did, you could have ended up dead, or worse." He shook his head, and the half elf smiled and leaned into his touch.

"There is no place I would rather be than at your side Master Vestic, remember; you have given me permission to love you freely." She blushed when he unconsciously cupped her cheek and then turned and looked out the window.

"I have no idea what I'm about to get into, so bide as much time, if I die the system will reside in you, it will guide you, just don't do anything I wouldn't." He slowly floated off the ground and through the window leaving Arla with Law and his daughter, Sri.

powered-by-MvLeMpYr

"But master, you are a ruthless monster capable of atrocities that have made demon-gods fear you, there is nothing you would not do." She chuckled to which the elder next to her winced with his eyes bulging.

"Milady, please, you are to remain at my side at all times, the survival of my clan rests in your kind hands... Please!" The old demon turned to Arla and bowed, as did his daughter.

"Do you have a library?" Arla leaned her head with a stoic expressionless stare as the new authorative figure.

"Eek... Yes..." He answered.

"Are there any scrolls on magic?" She asked again.

"Scrolls have long gone out of fashion milady, we have digitised all of our knowledge, but you have already expressed your inability to read and write our foreign language.

"Digitised?" She stared confused.

[Digitisation is the integration of texts or other forms of information to a sort of nonexistent space where it can be infinitely stored and freely used through some kind of invention called internet, the technology of this world is excellent Arla, it is far beyond the technology of Arkadia, here they have many Inventions that would make even Adonai stare confused] the system answered her curiosity.

[I will help you rapidly learn everything you wish to learn]

"Do not worry about such things, with the Master arisen I am unshackled from my previous illiteracy, show me your archives."

"Very well!"