“Tachibana-san-chi no Dansei Jijou: The Lost Tapes” was a verified show hosted by two indie seiyuu who’d found a box of Jin’s original notes from Comiket 81. Episode 4 ended with a live “follow command” to listeners: “Find the son. Make him speak.”
The mention of a usually refers to audio dramas or commentary tracks that occasionally accompany these releases. Some circles release "Voice Comic" versions or promotional audio snippets where they discuss the development of the "Original Tiene" (Original Series).
In the world of rare digital finds, your string is actually a set of "keys" used to verify and find specific media: C81 & MTSP : This refers to the specific release event ( Comiket 81 ) and the circle/author ( Jin Tachibana
If you're looking to find or follow original tweets about this topic:
