Episode 9 of "Nanatsu no Maken ga Shihai Suru (Reign of the Seven Spellblades)" begins with Pete feeling uneasy because he is unfamiliar with handling magic in his female form. Noll assists Pete with a healing technique to regulate his mana flow. Noll advises Pete to get accustomed to directing the flow of magic in his new form.

The episode then transitions into a sparring session where Pete faces off against Ms. Cornwallis. Despite his efforts and encouragement from his friends, Pete fails to land a single hit. Michela and Oliver observe the fight and note that Pete has yet to fully utilize his newly acquired abilities. After the match, Ms. Cornwallis expresses her frustration, feeling humiliated by Pete’s attempts.

The focus shifts to Katie, who voices her desire to establish a workshop in the labyrinth for raising magical creatures. She passionately advocates for changing the academy’s treatment of magical beings. Her friends, including Nanao and Oliver, agree to assist her in managing the workshop. They decide to inspect the workshop the following night.

The group ventures into the labyrinth, encountering various magical creatures and even crossing paths with the Labyrinth Gourmet Club, led by Kevin Walker, the so-called Survivor. Thanks to Katie’s quick thinking and the use of special incense, they narrowly escape a dangerous encounter with archers.

Finally, they arrive at their new workshop, impressed by its spaciousness and potential. The group enjoys a shared meal, and Chela suggests giving their six-member group a name. They form a "sword rose," a circle where their blades overlap, symbolizing their bond. Chela proposes naming the group "Sword Roses," and everyone agrees.

The episode ends with Fay accidentally overhearing that Michela and her friends are in the labyrinth, hinting at possible developments in the next episode.