Deep within a birch forest lies the "Huangdo Dormitory," quietly nestled away. In this place, 11 female students live by the rule of calling each other by their constellation names instead of their real names. Having arrived with a certain purpose, "I" hope to enter the dormitory as Virgo, but to do so, I must obtain permission from all 11 members living there. The first to meet is Gemini, who guides me through the dormitory, but it seems she knows my secret... Set against the backdrop of a slightly mysterious academy dormitory, this is a girls' story where the hearts of the twelve constellations become intertwined!