Yuko turns to her closest companion Ayano after a distressing confrontation with her former partner, seeking both emotional refuge and a fresh start. Their quiet evening together leads into an intimate shower where tender affection eases Yuko’s troubled thoughts. Meanwhile, Ayano’s latest academic pursuit involves a collection of enigmatic relics—an aged scroll, a preserved specimen, and an antique blade—and Yuko volunteers to examine the specimen more closely. Days later, another violent encounter with Taki triggers an ancient force’s awakening, plunging the pair into a night of unsettling mystery and desire.