But if she thought about it, all these people are connected with Akito, aren't they? It's more accurate to say that everything is possible because of Akito. The reason why Katakura hesitated when she mentioned staying, though. Setsura wanted to discover the reason. Why did he look so surprised when she suggested she wanted to stay? Is it that strange? From her conversation with Natasha, she gathered that there were other subjects other than her who wanted to stay.
It seems like she will have to inquire more about this later on with Oslo. Setsura refrained from using her phone too much, even if she can use it. It is an item that has not been made yet. She cannot risk changing the future events until the mission is complete.