Title: - Requiem for the fallen

Rating: - M

Main pairings: - Izaya x Shizuo, Roppi x Tsuki, Psyche x Tsugaru, Hibiya x Delic, Sakuraya x Shitsuo, Kanra x Shizuka, one sided Delic x Shizuo

Disclaimer: - I don't own Durarara

Warnings: Yaoi, yuri, incest, language

Summary: - AU. Shizuo knew he wasn't like the rest of his family, even so he was happy that is until his younger brother Tsuki gets lost and wanders into hell. Family secrets come to light and after that nothing is the same.

Unknown sacrifice

A/N:-So this one was going to be a one shot but the idea grew in my head and now its become this. Enjoy.

"Um hello?" Confused eyes blinked not realising his surroundings. Tsuki blinked fingers clutching nervously at his long white scarf for comfort upon realisation that once again he was lost. "Hello? Is anyone there? Shizuo-nii? Tsugaru-nii? Shitsuo-nii? Mama?" Why hadn't he just stayed where he was? Why did he try and follow the directions he had been given?

His entire family knew how troublesome he was and now once again he was lost. His only home where he had spent every day of his immortal life and he still got lost like a child. Tears beaded in the corner of his eyes threatening to spill. The youngest Heiwajima stopped looking up at the large gate as he walked through. "Hey! You're trespassing!"

Tsuki shrank back in fear, he hated getting yelled at. The guard angel didn't look happy, an angry expression on his face as he strode towards him weapon in hand. "...I-I..." Losing his nerve Tsuki turned and ran. It didn't matter which direction as long as he wasn't caught. Without his older brothers he was nothing but a coward scared of the shadow his pure white wings cast. "I said stop! You are not author-"

The blond didn't hear the rest catching a glance of a large purple and black arch with strange symbols engraved into the marble. Next to it was a rack of specially made suits. If he remembered correctly they were for the powerful angels and for the exploration to other realms. But Tsuki hadn't paid attention in class too busy daydreaming and no one seemed to want him to know anything, he was after all the purest angel in heaven.

"Stop! Kid! That's the portal to hell!" Now he really did cry unable to stop himself as he tripped over his own feet and tumbled through the portal. "Shizuo-nii! Help!" It felt as if he was passing through liquid and falling. Closing his eyes Tsuki tried to bring out his wings, instead only managing to shake in fear.

Most angels had managed to venture to the human world. His two brothers often brought him and Shizuo gifts back since they weren't allowed outside the realm or anywhere near the portals. They were happy though with the cakes and sweets that were brought back.

The change in the air was enormous, Tsuki gripping his throat as he tumbled out of the portal. The one this side was blue and white marble with words he recognized engraved. The other one had looked scary. The young angel coughed unable to breathe. This was why they wore suits. No angel could survive for long. "...He-lp!" His fingers clawed at the ground as his eyes slid shut seeing a shadow move towards him.

"Are you up yet?" Shizuo rolled over trying to ignore the pounding on his door. It was futile to ignore it, his mother was persistent. Throwing back the covers, the blond ran a hand through his hair, opening the bedroom door. "Yes, I'm up Shizuka." It earned him a glare from the big busted woman with long hair.

"Shizuo, I'm your mother. Why can't you call me that for once?" It was too early for this.

"You don't act like one. Maybe an annoying older sister." The blonde wasn't happy with that, her gaze dropping to his chest.

"I told you not to walk around like that. Put on some clothes, I've made you some breakfast."

Shizuo closed the door staring down at his chest. He had always known he was different from the rest of his family. For a start everyone had beautiful shining blond hair, while his real hair colour was a dark murky brown that was only blond thanks to his mother's charm. Then there were his wings. It was a rule that he wasn't allowed to show them.

And lastly there was the mark on his chest, a black circle with some of arrow like tail and points, along with strange wording around the inside. No one in his family had it and as far as he knew no one in heaven had it either. So following his mother's instructions, Shizuo kept it a secret. The older twins knew but Tsuki and Delic didn't.

Along with that he wasn't allowed near the portals, neither the one to hell or the one to the human realm. Everyone around his age had been, yet he wasn't allowed. It was forbidden and since Tsugaru and Shitsuo brought him another cakes back and told him stories it didn't matter. The sugar and artificial flavourings were addictive, the chocolate mouth watering delicious and then there were the small pudding cups which were his favourite.

"Shizuo, have you seen Tsuki?" Making his way into the kitchen to get his breakfast, it was clear to see they were the only two in the house. Most likely Tsugaru and Shitsuo had already left for work and Tsuki had probably been seeing his friends. With a sigh he pushed the plate to one side. "I'll go and look for him, he probably got lost again. See you later, Shizuka."

"How many times? Call me mother. No wait that makes me sound old..."

Tsuki usually wasn't that hard to track down. Everyone knew who he was, an adorable innocent angel who believed everything and instead of teaching him the truth, his younger brother was left in the dark, keeping him naïve and sheltered.

He too was well known as the most violent anger with a volcanic temper to match that only the calmness of his older brother could calm him down. It wasn't easy when idiots provoked him, especially since there were the family rules to follow.

Tsuki slowly opened his eyes. He was still alive? Looking around he had no idea where he was. It was dark. "Don't move around so much." The blond shrank back noticing that he was in some sort of circle. It was easier to breathe and his wings didn't hurt any more. "If you want to stay alive, don't leave that spot."

There were footsteps moving closer, a light briefly illuminating the dark room. "You. You're kind of stupid for an angel." Tsuki gasped seeing the stranger. Bright crimson eyes much like his own stared at him, the short raven hair did nothing to conceal the pointy ears or the swishing tail.

"Y-you're a demon!" The stranger glared at him.

"What you've never seen one before?" Tsuki shook his head. They had been shown pictures of cruel looking monsters but the stranger in front of him was nothing like that. "I've seen you angels come and go through that portal. I've never met one stupid enough to come without their protective suit."

Fresh tears threatened to spill. Even the demon thought he was stupid. "I-I didn't mean to, I got lost and then the guard angel chased me and I got scared and- and-" Crimson eyes narrowed the demon looking away.

"Stop crying! Its annoying!" The blond sniffed wiping his eyes.

"Sorry. What is this?" It looked like the circle was somehow protecting him.

"Its an atmosphere changer. What you're breathing in is the air from the human realm. If you step outside that circle you'll pass out again or worse." Tsuki shivered curling in on himself so he was perfectly in the circle.

"Thank you." It looked like the demon wasn't as bad as he thought.

The raven scoffed. "Don't thank me. I patrol the portal, do you know how tiresome it is to clear up any mess." The blond bowed his head not used to being scolded.

"I'm sorry. Um, My name is Tsukishima." He flinched when the demon growled lowly in annoyance.

"I didn't ask for your name. Will anyone come and get you?"

Tsuki sighed. No one knew where he was. "I- don't know." The demon scowled again.

"I told you to stop crying. Ugh. I hate angels, you're just as bad as the humans." If anything he sobbed harder.

"... Fine. My name is Hachimeroppi. Better?" The light was moved closer so everything wasn't as dark.

"Nice to meet you, Roppi-kun."

"So you saw him?" Shizuo's eye twitched as he tried to control his temper. He hated violence and anything to do with it. The guard shrank back in fear, his reputation known to everyone.

"Y-yes. He was trespassing." The weapon dropped to the ground.

"And you chased him. Tsuki gets scared easily, of course he would run. Where did he go?" Shizuo groaned recognizing the portal. With a sigh he dropped the man walking towards it.

It didn't matter if he got into fights, if he did something wrong. Everything was forgiven. But stepping anywhere near a portal to outside of heaven was forbidden. "Fuck!" Tsuki his younger brother and the youngest in the family had gone through it. "Hey! You!" The guard angel shrank back even as he looked up. "My brother. Did he have one of these suits on?"

"N-no."

Damn. If Tsuki had been wearing a suit then there would be time to find Tsugaru and get him back. Everyone knew angels couldn't survive the atmosphere in hell. It was only a matter of time... "Fuck!" Shizuo slammed his fist against the marble. If he went back it would already be too late. Storming over to the rack, the blond picked up one of the suits reaching for another.

"W-wait. Its one per angel." Shizuo growled holding the suit in his arms as walked through the portal.

Shizuo blinked looking around. He didn't feel any different. If anything the birthmark on his chest seemed to ache. He really wasn't like the other angels. There was no need for him to wear the suit, he could breathe the air just fine.

"One of my family will come and get me." Tsuki was quickly warming to Roppi feeling that they could be friends. The demon had quickly shot that idea down. "My oldest brothers are really strong. Tsugaru-nii and Shitsuo-nii. They're twin archangels and really powerful. Delic-nii is strong too but the last time I saw him he had black wings, I haven't seen him any more. Shizuo-nii is super strong but he's a special angel and my mama is really pretty."

The blond fell silent looking at the demon, he looked bored. "Hey, what's that on your neck?" The demon sighed pulling his top down. In the light he could see a black mark. "My brother has that. I saw it when he was washing." Crimson eyes narrowed but Tsuki didn't back away no longer afraid.

"I doubt that. This is a birthmark for demons. It shows which clan you're in. Your brother probably got a tattoo from the human realm." The blond shook his head vigorously.

"Nope. Shizuo has never been outside heaven. He's not allowed to."

"Not even once? Tell me what colour wings does your brother have?" The little angel fell silent. It supposed to be a secret.

"You won't tell anyone? Mama said if anyone find out we'd be in trouble."

The raven shrugged. "Your secrets are of no interest to me." Tsuki smiled brightly inching forward but still staying in the circle.

"Since you're my friend, I'll give you this and I'll tell you. They're the same colour as our eyes. I've only seen them once but they were so beautiful." The angel reached around his neck.

"Ah. I see. That explains it." Tsuki jumped as a loud voice rumbled through the dark.

"TSUKI?"

The blond grinned. "See I told you my family would come and get me. That's my brother." The demon sighed.

"Which one?" No one else could shout that loud, so it was his strongest one.

"Shizuo-nii. Come on, I can introduce you." His new friend pulled away.

"Forget we even met. Go back to heaven and don't let your brother's sacrifice go to waste."

"What sacrifice? Roppi-kun? Roppi-kun! Come back!" The demon was already long gone holding his scarf.

"Tsuki. Are you okay?" Nodding his head the angel threw his arms around him.

"I was scared but I met someone really nice. I wanted to be friends." Shizuo sighed handing the suit over. Whoever had been with the innocent angel was gone.

"Come on, Shizuka is wondering where you are." Rummaging in his pocket, Shizuo took out a packet which he had been given by Delic. It was a bad habit but one he couldn't quit.

Keeping an eye on Tsuki, the two of them walked back to the portal. "Shizuo-nii, can we come back? I want to see Roppi-kun again." Whoever it was, Tsuki had become attached to.

"Ask one of the others." The mark on his chest was still aching, the portal didn't look very welcoming.

"Yay. Come on lets go home."

Shizuo had a bad feeling, reaching out carefully to touch the liquid. "Shizuo-nii!" The blond looked up from where he had been sent flying, the tips of his fingers singed. It looked like his hunch had been right. "Shizuo-nii are you okay?" Next to him was his now wasted cigarette. Heaven didn't want him back.

"Tsuki. Do you trust me?" The youngest nodded his head. "I want you to touch the portal." If he was right, Tsuki would be fine. The blond swallowed running forward and reaching out with the tip of his finger.

"Shizuo-nii, it works now. We can go home." Getting up from the ground, Shizuo brushed himself down.

"Tsuki, listen to me. When you go back through, talk to the guard and tell him to take you home." Crimson eyes widened.

"You aren't coming back with me?" Shizuo wasn't going to risk touching the portal again, it was clear why he wasn't allowed through. "Tell Shizuka where I am. Remember, talk to the guard. Don't get lost." Without another word the youngest angel was pushed back through.

Taking out another cigarette, Shizuo stared at the portal. The angel portal led to hell and the human realm. The ones back had a demon and human filter so no one but angels could enter. Now he knew why he was different. Now he knew why he was forbidden from leaving heaven. He was a monster. There was no way for a demon to get into heaven. Shizuo slammed his fist into the marble "Fuck!" There was no way to get back home.