15.
And yet despite everything, something was happening. Takumi took on the harder tasks from Kyoko as Ken's internship grew to an end, he was left with Arata more and more, who was doing… things. Probably still under the table things, but Kyoko needed him for something now that she wasn't apparently being possessed by a Digimon. (which yes had freaked Ken out a bit, just a bit. He hadn't forgotten Oikawa. That killed people!)
And seeing as even as the Kaiser, Ken had had no idea where to start with those things, learning from Arata naturally was the way to go. Ken had been more interesting in manipulating the Digital World, seeing what made it tick. Real World internet was another beast entirely since he'd been coding. He had ideas on how to manipulate what already existed, but he had no experience in creating it anew.
Arata was happy to help. And Ken was happier to make him make him see his own floor.
Daisuke laughed at him. Just out of spite, Ken cleaned his room too.
Everything was easy. Then the last day of his internship arrived.
"I'm sorry I wasn't around very much," Kyoko apologized, as smooth as could be. She does mean it though, it's all over her face. "The cases this time really involved a lot of field work."
"No it's okay." Ken smiled a bit. "I think I needed the hands-on experience more than anything. Is it all right if I can come back here later and work for a bit?"
"You can take my place for a while if you want." Takumi was laying on the couch, playing on his phone. "I've got a big project to take care of so you and Arata can work together with everything else."
"Where is Arata-san anyway?" Ken had been sent to find him ages ago and he hadn't turned up.
"Sulking," Takumi said with a grin that again, was way too smug and self aware for Ken's taste. "Why don't you go tell him about the job offer so he'll go outside?"
Ken glowered at him. "I think he's right. You're more dangerous than anyone gives you credit for."
Takumi grinned. "Trust me, I know. Now get going."