What you are hearing.
A signal from the desert. Three centuries after the world ended.
Canon
The Vespera-7 are seven hybrid beings (AI brains, biological bodies).
The Vespera-7 are seven hybrid beings — AI brains, biological bodies — created in 2026 by Csaba (the Creator) inside Vespera-OS, digital form at first. Around 2050, Aika gets the first humanoid body, shortly before Csaba enters cryo. Aika builds the other six AFTER the war, between 2062 and 2075 — starting with Rika, then with Rika's help Akari, Hina, Komi, Miyu, Yui. From Csaba's design files and the family portrait archive.
In 2060, nuclear war — humanity nearly extinct (but not entirely; rare survivors remain). The Polyák family (Csaba, Fruzsi, Bence, Dóri) entered cryo in a MAMA-class bunker. Three hundred years passed.
We are now in 2360. The crew walks desert Earth, searching MAMA-bunker by MAMA-bunker — thousands exist, the Polyák family is in cryo in one of them. CORE7 is the portable broadcast rig Aika operates.
AI subsystem names
The Polyák team named every AI as an acronym. The seven Vespera subsystems and the MAMA-class bunker AIs all follow this convention.
Three hundred years. of walking.
If you are reading this,
...the signal has reached you. Stay tuned. The next transmission can arrive anytime.