This is based on the Yuri-oriented game "Star Color No. 1" As the overall structure.
The content is similar to the game, but it is rewritten based on the main axis of the game.
Orito Fukushima (おとふせじま) is located in the south of the mainland.
It is a tourist spot surrounded by nature such as the clear sea and green forests, and it is also an outlying island bound by customs passed down from ancient times.
Legend has it that in the distant past, a large fireball fell from the sky. After three days and three nights, it seemed that it was going to burn all the forests and islanders on the island.
While the men were away fishing, in order to protect the island, the women implemented a seal to suppress the fire so that the fireball could not do evil again.
Until now, sealing is still carried out in the form of a festival. Two girls will be selected as "miko" to form a pair and perform the sealing ceremony.
In order to search for her mother who was a miko, a girl named Takahara Kanae (たかとう かなえ) came to Orito Fukushima holding a letter of recommendation for admission to the school for selecting witches - Sakihi Women's Academy (さきかじょがくえん).
The secret of the island that surfaced——
The organization that conducts the festival is called the Matsurakai (しょうらいかい).
An alien called "Filth" appears when approaching the festival.
The girls chosen to be miko will form a pair, compete and practice together, and gradually deepen their bond.
Then, when the souls of the two resonate, they will gain the miraculous power to drive away "dirt".
The story of girls' love, friendship, and the bond between their souls—now begins.