[ He can feel that smile. That's two smiles in a single convo.

Just going to ignore the reason why he might be smiling because he has to figure a plan out that doesn't lead to Ayabe getting killed to keep Chuuya in the Mafia. ]

There's cameras outside of the offices and armed guards. While he's sure he has Chuuya's loyalty, he will have a plan in mind in case Chuuya betrays us and tries to make off with the files. You both probably shouldn't go any where near the building, or they would kill you and torture him.