He starts to say something but stops short before the words leave his lips. Was he glad that Kazuma was here? Was he grateful to see his dear friend after longing for him? Was it fair that he was here, in Trench, with all of its gruesome horrors? Ryunosuke wasn't certain and decides to keep this thought to himself as he moves to follow after Kazuma as they start to leave the bowels of the ship.

"I'm certain the mystery will be solved, but as far as I'm aware, no one knows." He finally says as he falls in step. There's another pause as he considers his next question. "I'm not exactly certain." He says slowly. "Manabu's blood causes him to freeze, cooling the air and things around him. He also shocked me once, but I'm not sure how it relates."

He has an idea of what it meant, but he wasn't completely certain and did not want to elaborate on the chance that he was wrong.

"I'm still not sure what my blood type is, though I haven't felt any different since I've arrived. There are people studying the different blood types. The other Sleepers are very informative and kind enough to share that information."