Yami no Matsuei dj - Enigma - Seikon

The business of Death is never done. Asato Tsuzuki works as a Shinigami, or "Guardian of Death," in the Ministry of Hades. It's his duty to make sure that the souls of the dead reach the afterlife, but contrary ghosts and humanity's evils keep getting in the way of a job well done. With all these problem assignments, will he ever get a bonus...or will he be stuck paying back damages for all eternity? (Source: VIZ Media)

From Half-Baked scans: Sequel to Enigma - Seikon. An anxious Tatsumi confronts Tsuzuki about his visit to Kokakurou. Tsuzuki attempts to reconcile things between them, but when guilt and self-loathing threaten his sanity again, Muraki appears with a shocking revelation. In the omake, Za Chienji - Sequel (The Change), Watari's cure may be even worse than the problem. Pairing: TatsumixTsuzuki, MurakixTsuzuki, Muraki/Tsuzuki/Tatsumi; appearances by Watari, Count, Hisoka. Spoilers: Kyoto arc - manga volumes 7-8, anime episodes 11-13