Guilt – Episode Four, Future Memory.
-first half, Ryo-
Ryo knows better than to seek consolation or comfort from Kouji, and he wouldn't accept it from Gawl. And he tries to move along, but he's carrying his past with him, and in more than the literal way. It's hard.
-second half, Kouji-
Kouji knows what his friend's thinking. He knows that Ryo isn't sleeping well. He also knows, though, that their friendship isn't one built on empty words.
Ryo must be aware that Kouji judges him guilty.
Ryo may have been carried away, Ryo may have not noticed, flying too close to the sun on the wings of science, Ryo may have been given orders.
But Ryo knows that the project was driven by his own decisions and his own genius, and Kouji has no time for people who hide their responsibilities behind extenuating circumstances
So he watches silently, and reminds Ryo that they have a mission.
He watches in much the same way he watched Ryo agonise over the pressure to continue the experiments, and the guilt in the blond's guileless eyes is the same as it ever was.