To answer the question of why Arlua and Izaya didn't hae a child between Attenuation and System Error: we have this lovely and depressing oneshot
Disclaimer: i own only my OCs
Shizuo burst into the hospital room, Tania on his heels, holding the nine-month-old Rimiko. Supai had just barely beaten them there, and Kadota was already inside the room with Izaya, both standing over the hospital bed and the unconscious figure laying there. Shinra stood by the door with Celty, features set in a grim expression.
"What happened? That da-" Shizuo broke off with a tremendous effort and a glance at Rimiko. "The flea just said it was Arlua. What's going on?" Everyone looked to Shinra, who closed his eyes, unusually serious, before explaining.
Arlua's eyes fluttered open and she found her boyfriend and the man she regarded as a brother standing over her.
"You're awake!" Kadota seemed relieved, if still terribly upset for some reason, but Izaya's expression was a barely-masked sea of anguish. His eyes held more pain than Arlua had known he was capable of showing, even to her. When he picked up her hand in his, she felt his fingers shaking and tried to soothe him.
"It's all right, Izzy," she murmured. "They hit my ribs, just like what happened to you. Shinra said nothing vital got hit remember?" The information broker looked away, his grip tightening on her hand.
"Lu-chan..." he choked, unable to continue.
"Shinra knew about the baby," Kadota reminded her gently. "With the blood loss and temporary shock, he wanted to put you under quickly, but with something that wouldn't hurt the baby. But he didn't have the medication at his house, so we were going to bring you here."
"I remember all that. To be safe, he said," she agreed. She frowned, looking from one man to the next. "Izzy...Kyohei..."
"They whisked you away before anyone could tell them," Izaya spat. "The nurses didn't listen to me or to Shinra. They said they were sure the doctors were aware of the situation. Their treatments -their operations or anesthesia or something- was too much." There was an indescribable agony, an unquenchable hate in the informant's voice.
"No..." The word was a whisper. She knew what he would say next, dreaded it, wanted desperately for him to say something else, anything else...
"Arlua," Kadota began gently. Izaya cut him off with a look, and Arlua knew he felt the need to tell her himself, since it had been someone looking for revenge on him who had attacked her. Kind of like Natsuki a little over two years before. Only this one had been more concise.
"Arlua, you had a miscarriage," Izaya managed. "The baby is gone." A choked sob racked her body as grief flooded her. The words had been said and they could never be taken back.
This could never be undone. Through her tears, she looked up and saw Izaya trembling with his own grief and rage. He had been thrilled when she had told him she was pregnant, and they had agreed not to tell anyone except Shinra, who treated their wounds, and Kadota, who had become Arlua's closest confidant. She hadn't wanted to disrupt Shizuo as Tania's life with Rimiko, not when it was so early and the pregnancy was still so fragile.
They had wanted to protect their baby.
Now their baby was dead.
Never again, Arlua thought, fighting the overwhelming sorrow welling inside her. I will never again risk an innocent baby's life simply because we wanted a child.
"No more," she sobbed. Izaya nodded woodenly, understanding and agreeing.
They would not have children of their own, and they would always remember why: because any child of theirs would be in constant danger, would be targeted and hated. Izaya had plenty of people who wanted him dead. Even Arlua had enemies, people she had hacked and ruined.
They were enough for each other. Their little family of two would never grow.
But Izaya had one last thing to say, and when she heard it, it reduced Arlua to a crushed, wrecked state that would take her over a year to recover from.
"It was a girl. I was thinking...if she had lived...I know we decided to wait to discuss it until we were ready to tell other people, but...Aria would have been a nice name..."