Ianto lowered his eyes, sighing. He really was going to have to talk to Jack. He couldn't just go disappearing on him, couldn't just head off to the Enterprise and not tell him why he was going, in case... In case he didn't come back. He owed Jack that much. He owed Sulu that much, especially if... If they made the trip, and it didn't work, and if...if he ended up dying up there, under McCoy's supervision, then. He didn't want Jack to blame Sulu for it. He didn't want Jack to have to find out that something had happened to him the way that Sulu had, when he was by himself and when there wasn't anything he could do about it.

"Yeah, alright," he said, after a moment. "I... I think I've got to ask him over, though, like I said. This... This really isn't a conversation that I can just drop on him over the phone, after all. And..." He raised his eyes up to look at Sulu again. "I want you to help me tell him. You...you know what he's like, when he's upset, yeah? I...I don't really have the energy to deal with that alone. Even with your magic healing tea," he said, with a small smile. The tea would make him feel a lot better, at least temporarily, after all. "I'm lucky that you've got such a useful hobby." And job for that matter, as well as the fact that he was from the future, but Ianto wasn't going to go into that. Not yet, at least.