During the initial period of Reiwa, Keitarou Maebara relocates from Tokyo to Hinamizawa. He is thrilled about his new life in Hinamizawa as he becomes acquainted with the offspring of previous club members. On one occasion, he encounters an enigmatic young lady named Inori, followed by another girl who introduces herself as Kururu. It is revealed that Oyashiro-sama's curse extends beyond time and generations and will resurface in the world of Reiwa.