[Surprisingly, there are a lot of things he wants to say to Hikaru. None of which would come out exactly...sane, so he shoves them down. Hikaru himself is a large reminder of the message Ichiru gave him at his grave. He still wasn't quite sure what goal his brother didn't want him misinterpreting...]
[Zero did think he knew part of that message though. This was, at the very least, the easiest starting point within the whole facility for him.]