A crossover from my favorite anime and Vivy: Fluorite Eye's Song.

To make it fun, I added an OC as the main character who is an A.I inside a crater with the 6 girls meeting her.

With her knowing about school life in Lydian and friendship in order to know more about emotion.

While learning what she does as an A.I which she remembered.

This is the mobile task force for paranormal disaster countermeasures under the direct control of the United Nations.

Squad of Nexus Guardians or known as S.O.N.G.

And it is also known as "Section Two" for taking care of threats like the Noise which are beings who appear from when someone summons, also known as "Alca-Noise".

As humankind's final hope is the "Symphogear". The only ones who use these gears are girls with the power of god's weapons.

Some are heroes, some are enemies but now allies along with a girl who is a normal one but a Symphogear user like them.

If something happens, They come into someone's duties and go on adventures with the Gjallarhorn relic which connects with other worlds and defeats gods and monsters, also each other but now friends.

And now they are in the command room with Genjuro in front of them with Sakuya and Aoi on their operating chairs with Elfnein.

"Looks like you are assembled, Then let's start the point." He said as a screen appeared with them looking in shock as if it's a crater inside a forest.

"Shishou….What is this?" Hibiki asked him with shock.

"This is the crater, Which must be known as being in it." Genjuro said causing the 6 Symphogear users be shocked due to what he said.

"Y-You mean like an alien or something-desu?!" Kirika said in shock.

"Calm down, Kiri-chan." Shirabe said, calming her down.

"It may be, But something must be alchemy-related or science…." Elfnein said, thinking about what is inside.

"That's right." Shinji agreed with her.

"Well, The only thing we need you to do is to investigate it." Genjuro said while crossing his arms. "Prepare now! If it's something suspicious or not! Strike for now!"

"Roger! (Desu!)" They agreed while nodding their heads.

After the meeting…

The 6 Symphogear users are looking around for the crater, As it is in a forest in their search place.

"Now if you mention it. It seems like a forest Is harder to look at in the dark….." Hibiki said, shuddering in the dark.

"What are you scared?" Chris said smugly to her.

"It's not that, It's maybe a little dark….!" Hibiki said with sweat on her face.

"Well, The darkness had a bit of fear." Tsubasa agreed with Chris having a sweatdrop.

"Senpai….."

Until they saw something which is a crater and walked to it, And look inside was a girl with white long hair with black ribbons and in a black dress (Like Hatsune Miku's Infinity Module).

"Is that….." Shirabe started with surprise.

"A girl-desu…?" Kirika said with surprise as well.

"But, she doesn't look like danger…" Hibiki said, knowing It's not an enemy.

"Yeah." Tsubasa nodded.

"But why does she sleep in there?" Maria said in confusion.

As the girl opened her eyes causing them to be shocked with her opening as her red eyes turned shining red narrowing at them,

"W-What?!" Hibiki exclaimed in surprise.

Insert Yousei Teikoku "Attack!"

The girl sang with beings that looked like female androids surrounding them, As the girls transformed into their Gear forms with their Zesshou.

"In a berserk mode, Things who get in my way will be dead." She said, causing them to hold out their Armed Gear.

"Wait hold on! We can talk If we understand this. So tell us your name-" Hibiki said to her but cut off with a android attacking her as she dodged it.

"She is singing but not with a Gear?!" Tsubasa exclaimed in shock, dodging the android's attacks.

"If that's true….." Shirabe started as she held up her yo-yos.

"We can't lose-desu!" Kirika finished with them running toward them.

As they do their usual attacks with Shirabe shooting millions of small buzzsaws from her head gear. And Kirika shoots boomerangs from her scythe.

Alpha Style 100 Rebirths

Kill Juilet

They cut them down with a tornado and buzzsaws. As more came to them while shooting eye lasers.

"No way?! It was made more due to force!"

"Is that fair-desu!?"

However the androids got to them by shooting explosions causing them to fly away screaming.

"Shirabe! Kirika!" Maria exclaimed worriedly as she ran to them.

"Are you two okay?" Hibiki asked to the both of them worried. "Did you two get hurt?"

"Ouch…." Kirika winced as she rubbed her head. "We're fine-desu…"

"Yeah." Shirabe nodded her head as Hibiki and Maria sighed in relief.

They looked at the girl who kept on singing as they saw her raising out her arms with the robots raising up.

"Did she sing and revive them like that?!" Tsubasa was surprised and used her sword to make blue lighting at them.

Blue Flash

It worked but more robots came and jumped to them, As they dodged more.

"If you really want to be that, I will make you more dead!" Chris exclaimed with her summoning blades with her Armed Gear.

GIGA ZEPPELIN

"There are no more of them defeated…" Hibiki said while raising out her fist.

The girl prepared to make another attack but she began to feel the pain and wince and fell to the ground.

"Is she feeling berserk but feeling weak?!" Maria exclaimed in shock of the girl's actions.

"Oh crap…." Chris said in shock as well.

"Although, It must be because of the way she sang." Shirabe said also shocked.

"I'll help her!" Hibiki said with her running on to help her.

"Tachibana?" Tsubasa said with widened eyes.

As the Gungnir user grabbed her hand and clasped it causing her to stop feeling the pain in her heart.

"What…." The girl said in shock about what she was doing.

"Listen." Hibiki said to her that the girl began to listen to her even though she stopped being berserk for now.

"Although you felt more pain In your heart, Like about Maria-san and the others, Ryoko-san, Carol-chan, Shem-Ha-san, Vanessa-san, Saint-Germain-san are when we are enemies. But with this Armed Gear which is about holding hands with others. I'm sure we can understand each other. Because we are the same being." She said with a warm and gentle smile as the girl thoughted.

How warm….It's like how I was when I sang like how Diva does.

"...Okay, I will tell you about what I am, And my name Is Liliana." She agreed since she was attracted to this warmness.

"Yatta! Thanks, Liliana-chan!" Hibiki cheered as she hugged her. Liliana felt it's disturbing but it's so warm as the others smiled bitterly at this while looking at each other.

And so Liliana was sent to S.O.N.G and is about to go to Elfnein's Lab for the explanation about what she is.

"You found her?" Genjuro asked Hibiki who nodded.

"Yes, Although there are some androids. But she doesn't have a Gear." She explained as Genjuro crossed his arms thinking.

"Maybe, She must be an alchemist or something made of science." He said to them,

"Then, I will explain with the person's mouth." A voice said who went inside the lab with it revealed to be Liliana.

"Liliana-chan!" Hibiki said as she ran to her.

"Hibiki, You came." Liliana said with a smile on her face.

"Are you sure about going in here?" Chris asked her.

"It's okay, They said that I will move freely since my berserk system has gone out." Liliana replied.

"Also, What are you? You kind of look like you're not a human." Maria said to her curious about who she is.

"I will tell you about who I am. It's a promise between me and Hibiki." Liliana said due to It's a secret to them.

"I'm an A.I made by a laboratory from the future." She said, causing them to be shocked.

"A.I?!" Genjuro exclaimed in shock with his "datto?!"

"Dedede! Shirabe, We saw a program who looked like a girl-desu!" Kirika said as she got hyped about getting a new thing.

"Kiri-chan, calm down." Shirabe touched her on the shoulder.

"Huh, Why are you that surprised? Kirika-chan." Hibiki asked her

"However, I really don't know if I'm an A.I who sings for what purpose. But I felt berserk due to the memory-loss." Liliana said while looking down.

"Maybe, Because the systems with the protocol made me like this…." She said feeling guilty and looked down. "Like my guiltiness and loneliness being loose."

"Don't worry." Hibiki said as she held her hand while smiling at her. "You held my hand, Although you don't know what human emotions are. However, I'm sure we will find out why you sing that very much."

"Hibiki…." Liliana said gladly since Hibiki is the one who had the warmth to due to her kindness she gave.

"Thanks."

And so she began to become Section Two's new member which is for Hibiki and the others sake.

END