"You already remember it?"
Mahendra didn't seem to hear Vian's question, his eyes still wandering digging for memory, "his code name starts with the letter D, doesn't that mean he's special?"A question that drove the interlocutor stunned for a moment.
"Oh' he didn't just accept a Brainwash experiment. But he's also the product, from the D floor?!"Vian's sentence was pronounced explosively.
"He did.. him.. Hehehe.."Hendra laughed happily. Laughter is a condition of happiness.
A moment later his laughter died down. He grabbed a glass of water on the dining table and gulped it down, "we can use him. That means, we have to hunt down D103 to get Rolland back. After that, we can use to destroy the entire Tarantula. Ahh.. I really can't stand to want to work, and go back to lead you" it seems that only Vian was able to understand Mahendra's question-marked lines.
A person who has the code D, is the product of experiments from floor D. A symbol that has a special meaning.