Dove frowns when he hears Ren mumble to himself.

"From the way it sounds, you are familiar with him, then..."

Not that he can entirely blame Ren for the sentiment, given he has his own misgivings about Maruki.

"...Truth be told, I'm still uncertain why he did such a thing. There was some theorizing that my world's Amamiya-san was unable to make the necessary choice in time, and was put into his sleep to spare him the pain of agonizing... but even that is just a theory."