A bright future was guaranteed to her. But only if she could graduate. Ariel is a mischievous kid from Fitzsimmons Academy, who enjoys a daily life full of pranks, magic, or both. With no intention of studying, her only goal is to graduate and inherit her parents’ merchant guild. The graduation banquet finally arrived. While looking at the mess caused by the prank of her childhood friend Kyle, who is a formidable troublemaker, Rosemary, the “Princess of the Student Council” who was taking control of the cool boys in the academy, suddenly appears and pours out inexplicable resentments. “Is it a bug? The difficulty couldn’t be this high. Kyle Villard is just a subcharacter!” Bug? Sub character? What the hell are you talking about? Her vision went dark. When she opened her eyes, she was back to her life nine months ago. 5th grade started again, but Ariel’s daily life, for someone who only wanted to graduate, began to change little by little.