Yutaka was fourteen years old when he was run over by a car and fell into a coma. Now, ten years later, he wakes up and realizes that his family is not intact anymore: father, mother and sister live at different places. Yutaka decides to re-open the pony farm that his family once ran.

The story takes place during the Muromachi period of Ancient Japan, in the midst of the Ōnin War. The main character in the series is Tomiko Hino, a historical figure with a bad reputation because of her actions to rebuild Kyoto after the Ōnin War.

Tenko runs a pension alone. The pension is located in a forest in Nagano, that is full of the Japanese larch tree. She interacts with her guests, who come from all walks of life.

Yusuke Nogi of Ryosho's Energy Development Division said that 10 times the official down payment was mistakenly sent to GFL, a local infrastructure company involved in a solar energy plant to be built in the Balkan Republic in Central Asia. Suspected of involvement, he heads to the Balkan Republic to collect the difference of $90 million. With the cooperation of his CIA friend Sam, Nogi obtained information that the terrorist al-Zaer had laundered the full amount of the contract money into diamonds and brought it out.