A demon and his son live in the mountains. The princess of Ryuuguu castle has a baby. Taikichi, who always gives an offering to the Ryuuguu Abyss, is given a wife and child by Ryuuguu Palace.
Once upon a time, deep in the 
mountains where no men lived,
Era uma vez, nas profundezas das 
montanhas, onde nenhum homem vivia,