A/N: To be honest, I don't really do serious fics. Let's try that one. I hope this isn't lousy. Oh! And if you know Project Zero: Crimson Butterfly game, you would recognize the phrases. Enjoy.

||Oath||

"We'll always be together right Vani?" said the kid Sora. Vanitas, for a second smiled at his twin brother.

"Of course Sora! So long as were together. No one is going to make you cry."

Vanitas was on the school's shower room and after their tournament with the opposing school which they've won with flying color. Finishing up, he put his clothes on and texted Sora saying to meet him at the school pavilion since the idiot of his twin couldn't go home without any distractions like helping some strangers.

He's too good for his own, Vanitas thought. As he walked at the corridors, he stumbled upon Ventus. The older Strife apologized, saying that he wasn't looking at his way.

"Hey Ventus," the blonde Strife turned, "Have you seen my idiot twin?"

"Sorry no but…" as he put his hand on his chin, remembering something important.

"For all I remembered, Xigbar and Xemnas were inviting him somewhere.

"Aren't they the scho— Oi! Vanitas!" he didn't wait for Ventus to finish his theory as he ran to find his twin. What do they want from him? He was sweating even though he just got out from a decent shower to freshen up. He looked for his brother in every parts of the school.

Caf? No.

Classrooms? No.

Rooftop? No.

Auditorium? Still no sign of Sora.

"Dammit!" screaming to his lungs. His heartbeat was pounding so much. Vanitas isn't like this every day but whenever Sora wasn't informing him on whatever he does. The older Fair was just worried that something bad would happen to his twin. Sure it's not like he is their 'another Mom' (Aerith) but he was so protective towards his younger twin. Only Sora understood whatever the older Fair is thinking. There's always a twisting pain he can feel through his chest.

"That's not true!" said the voice. It wasn't that far but that was definitely his brunette of a twin's voice. He got up, following the whereabouts of the voice.

"Sora…" Vanitas mumbled.

"Vanitas would never be part of your club! He may be a bully but he never hurts people without any reason!" his voice was getting louder and it came from the Principal's office. Well… he wasn't really expecting that they would hide in here.

"Your twin is our goal. You are the one who is holding him back in joining our side," said a creepy low toned voice which Vanitas recognized, Xemnas. He was at the door, he wasn't ready to open the door. Yet.

"Because of your goody-good deeds, So-ra he can't join us. Meaning that he's still the twin you're looking up too. Brave and not fear of anything which is exactly the opposite of what he is. We know him more than you do." Another voice, Xigbar.

"No! I won't let you make Vani do things!

"I'll fight even if I have to!"

Which make the two seniors laughed at what Sora said.

"Let's see if have what it takes then, puny Sora." Vanitas knew what would happen next. He's going to punch Sora. Before that happens, the older Fair opened the knob taking the hit from Sora with his fist.

"Don't you…" with such force, Xigbar's hand was getting numb. He was in pain while Xemnas on the other hand, didn't dare to move from his place.

"Vani…" Sora was staring at his twin brother.

"Don't you dare lay a finger on Sora!" Fists went flying. The younger Fair was scared. He was scared whenever Vanitas was acting like a pyscho killer that will kill anyone in his way. He couldn't watch what was going, closing his eyes shut.

"Hey… It's over." Vanitas tried to wake Sora up. Xemnas and Xigbar was nowhere at the scene but the raven-haired Fair's face was bruised and eyes half-closed. He even has a bloody nose on his face!

"Vani!" as Sora tackled the bruised twin. Vanitas wailed, asking him to let him go but the brunette wouldn't listen.

"Oh Vani! Vani! Vani don't you ever dare scare me like that again!"

"Yeah… I get that and I told you to not go with strangers you barely even know!

I promise to you that no one would ever harm you right?"

He remembered!

" Don't worry Sora. I'm here for you. Always. "