Oikawa had known Kageyama for a long while. They'd worked together at the bank for five years, which had been plenty of time for him to figure out the way Kageyama's mind worked. That had been why he'd chosen him to sign off on the forged paperwork. He knew Kageyama wouldn't catch on, and even if he had, he wouldn't have ratted Oikawa out. He may have quit his job and gone to work elsewhere, but he wasn't a snitch.
Neither was Oikawa. Even if Kageyama hadn't pulled through, Oikawa had no intentions of attaching Kageyama's name to his crimes. He would have continued to keep his mouth shut, but Kageyama didn't know that.
When Oikawa saw him the next day, Kageyama looked like he hadn't slept at all. He was noticeably twitchy, and when Oikawa called out to him, he nearly jumped out of his skin. Breakfast had just ended. A herd of inmates drifted past, headed toward the yard. Oikawa had been headed in the opposite direction, intending to hunt down Kageyama, but running into him had rendered that unnecessary.
Kageyama's eyes darted from Oikawa to the crowd of inmates, his face drawn. He gestured for Oikawa to follow him, and didn't say a word as he led them away from the main hallway. They ended up at the broom closet, and Kageyama shut them inside. He tried to secure the door, remembered there wasn't a functional lock, and let his hand fall to his side uselessly.
"So, Tobio-chan?" asked Oikawa without preamble. There was no point faking formalities. Kageyama knew exactly what he was after. "Did you come through for me?"
Kageyama winced. His stare was distant. "Sawamura-san almost caught me. I set off the metal detector when I walked in and he had to pat me down and he... he almost..." Kageyama pressed his hands over his face and took a deep breath that made his shoulders shake. "It was right there, I don't know how he missed it. If he'd found it-"
"But he didn't," said Oikawa. He placed a supportive hand on Kageyama's shoulder and he flinched away. "It's okay. You did it, it's over. Oikawa-san will never ask you for another favor."
Kageyama peered at him through his fingers. He looked just like the younger version of himself that Oikawa had first met, fresh out of college and unbelievably naive. Little had changed. "I can't do this again."
"You won't have to." Oikawa spoke softly, trying to comfort him. He couldn't let Kageyama panic. It could have a negative impact on both of them. "I'm not trying to set up a smuggling ring here. I just need to take care of some business."
Kageyama blinked up at him. "If you're planning to kill someone-"
"Don't you worry about that." Oikawa patted his arm. "I won't tell anyone you helped me, with this or with the bank. Your name will never leave my mouth again. You're safe. Give me the stuff and we'll forget this ever happened."
Kageyama dug into the edges of his boots and passed over the contraband. Oikawa thought that was an amateur hiding place, but he kept the criticism to himself. It had worked. There was no point complaining about it now.
He tucked the items into the waistband of his pants and settled his shirt over them. "Thank you, Tobio-chan. I owe you one."
"Just stay away from me," said Kageyama. His eyes were dull, fingers shaking slightly where they curled around the edges of his belt. "That will make us even."
"Deal." Oikawa gave him one more solid pat, paired with a sharp smile, before leaving the closet.
Kageyama didn't immediately follow. He probably needed a moment to collect himself, and Oikawa wouldn't take that away from him.
He'd gotten what he wanted. The first step of his plan had been a success.
Now it was time to finish it.
