I Entered a Dangerous Dungeon...Sophia has a dream about Catarina's friend in the real world, Atsuko Sasaki, who was very saddened by Catarina's sudden death, thus she made a wish that when it was her turn to die, she would like to live her next life again as Catarina's friend. Meanwhile, as part of their practical exams, everyone is tasked with entering a dangerous dungeon for a magic stone, with Catarina on a team with Geordo, Keith, and Sophia. During the chaos of one of the dungeon's traps, which Catarina sets off by accident, Catarina ends up falling down into a hidden passage, where she unknowingly finds the magic stone while harvesting mushrooms...