Fourth Prison

In "The Fourth Prison" Prison Daiyon. (Daiyon Purizun) will punish those who suffered from anger and despair. This prison is the "Swamp of Darkness" (Ankoku no Numa) black swamp, marsh or dark dark sea, the name of the lake, or Styx Styx theoretically, is not exactly by Kurumada, that's where the dissatisfied and angry, guilty of unhappiness and anger, discontent and anger held by the (sins of anger) try to drown each other, all sink together.

It is a place guarded by the specter Phlegyas (or Phrégias) of Lycaon, who also does the job of pin or boatman, it attacks and defeat Shiryu and Hyogo, but Kanon, witnessing the     previous battle, kills one blow to the spectrum and takes his boat, taking with him two Bronze Saints. The prison looks like a lake that covers the spectrum with its raft. Phlegyas, the journey is free, once the smugglers have killed those, obviously. The name of the keeper pin is inspired from the same place in Dante's Inferno, but, unlike the specter of Acheron Charon, Phlegyas is not placed under the sign of Styx, but Lycaon.