Sulu wasn't sure how to proceed, here. He didn't know the cause of Owen's death - all he knew was that whenever Ianto had spoken about him, it had been in the past tense, and he'd always been... sad. Not upset, just....

He took another sip and shook his head. "I don't think there's exactly a standard emotion for this situation, so. His... What happens to him isn't really like what happened to you?" He doesn't want to bring up Ianto's death, but there's no getting around it. "It's not something we can bring him back from?"