Tale of the Hero in a Dark Future

Among the divine clan, treated as a "defective" and forced to be a "boy" due to her parents' circumstances, the girl Shion suffers from deep inferiority complex and loneliness, surrounded by her perfect older brother (Raito), older sister (Kanon), and her admired eldest sister (Ranna)—the only place she belongs. On Ranna's birthday, the one day that is Shion's sanctuary, she ends up engraving an unforgettable memory that day. This is a story of a goddess born in a certain country.