The Soot-Covered—their duty is to capture black butterflies, the source of calamity, and deliver them to the living god who serves as the village's guardian deity.
Yoi, who does this soot-covered work that no one else wants to do, lives each day desperately despite being treated as unclean and oppressed by the villagers.
One evening, after being beaten by enraged villagers, the person who appears before the battered Yoi is actually the living god himself...!?
"Every calamity that falls upon you—from now on, I will banish it all."
Saying this, he holds Yoi close, and...!?
This is the story of a lonely maiden clumsily learning what love is.