That's true. [He can absolutely imagine Yashiro charging off after someone. Not just her, but she's the one he thinks might be the most reckless about it. Sunny is too cautious--too used to hallucinations, he suspects. (Though Nagito would have rated himself the cautious type, too.) Kel... Kel would probably be at risk as well, though he's at least not as young as Yashiro. Hanako is used to strange things like this, Nagito is sure. Mari has a good head on her shoulders, but on the other hand, she's always reaching out and trying to help people, so maybe...] Letting everyone know will help reduce everyone's potential confusion, as well. Maybe at the next big get-together, unless we want to go around telling everyone one by one.

[Nagito looks thoughtful.] Just to confirm, the man you saw was someone who was dead, right? Mine was.