Oxygen Mask Choir / 氧气面罩合唱组

Three audience members hum the interrupted chorus through medical oxygen masks. They are not performers and do not own the master tape. They are the last living witnesses who can corroborate that one uncut refrain was audible before the ward microphone disappeared.

Their actual runtime card is card-storyteller-oxygen-mask-choir, gained by storyteller-rite-ward-02-mask-choir. Their group state is never blanket consent: one member may opt out, public testimony spends privacy, black-box backup needs a later readback, and sponsor sedation can remove the whole group from play.

Gameplay progression lives in Oxygen Mask Choir Living Witness Storyline.