Good & Evil
Following Shion's mother's instruction, Shion and Nezumi pays a visit to Rikiga, an old friend of hers. Rikiga offers himself to take care of Shion, but Shion himself gets angry on him when he asks Nezumi to work for him as a male prostitute and leaves. While cleaning Inukashi's dogs, Shion is inquired by her about his relationship with Nezumi, and when an angry Nezumi appears before him, she realizes he became attached to Shion. Believing Nezumi became soft because of Shion, Inukashi attacks Nezumi with her dogs, but their fight is interrupted when Shion arrives. Shion confesses to Nezumi that despite caring for his mother, he decides to live in the west district with him and has one of Nezumi's rats send a farewell message to his mother.
Aired 29/07/2011EP 4 - Good & Evil

No.6
In a near future world, after the last great war, most of mankind lives in a handful of city states. There, for the privileged elite, life should be perfect. But for young Shion, the only thing perfect has been the nightmare his life has become since letting a strange boy called Rat spend the night in his apartment.
Banished to the outskirts of the city and stripped of all privileges for helping the mysterious stranger who has since disappeared, Shion now finds himself in even worse danger as his inquiry into a new series of mysterious deaths results in his being arrested on suspicion of murder!
But even as Shion is being sent to the city's Correctional Institute, the long-missing Rat reappears to rescue him! Now on the run, the two young men have only one chance at survival: uncover the mysterious secrets that lie at the sinister heart of No. 6!
(Source: RightStuf)