8.
Freedom came easily. Once he had his information, Arata just let Ken walk out the door. More specifically, he let Ken bolt out of the room with terror in his gut and not a second look.
Hours later, when he was home and with a nice cup of cocoa and on the fifth call to everyone that he was fine and dandy, the shock faded away and the panic set in.
(At least Daisuke was coming over with Wormmon. That would help.)
So, in desperation, he called the Kuremi Detective Agency. Unlike when he'd needed to confirm his internship, Takumi answered immediately and with such a sleepy voice Ken suspected he had dozed off, which was a shocker on its own. Still, the other snapped to alertness when Ken explained everything.
"Idiot." Ken heard the affection, so clear, brilliant and clear. "Okay, he said all that… all right… Ichijouji-san, I still want you to look into this situation, but for now, sit him out. If he's that powerful and unstable, your life is at risk. Kyoko-san would hate that. I need you to look into Kamishiro. I'll call you if that changes. Okay?"
Ken was all too happy to agree and hang up. After all, Daisuke had just barged into his house.