Kakashi let out the smallest noise of amusement as he watched Obito take Rin's hand, and obliged by doing the same. He, like Obito, knew better than to stop Rin from getting her way as it usually ended up with some variation of detrimental treatment-- not to mention that he'd kind of missed being able to spend time together as a team. But perhaps that was just the sentimental part of him speaking.