Asphyxia

Asphyxia is a stage first appearing in BlazBlue: Chronophantasma.

It is a hidden dungeon underneath the 8th Hierarchical City of Wadatsumi where Tenjō Amanohokosaka has hidden Kushinada's Lynchpin.

In the "Fetal Movement" version of the stage the Lynchpin can be seen as activated.