The girl goddess was a local 700-year-old deified tree called Kukoamenoduchimikoto. The short film starts off with the shrine and the tree being demolished to make way for new construction. Later as the tree's trunk is cut to smaller pieces the girl's condition turns worse until she dies, and the woman buries her body far away from the city where the tree can grow again.
Nah it was mutual, didnt you see the smiles the morning after? But really it broke my fucking heart I watched it like at least 10 times im not even joking