Following the death of Chiffon Fairchild and the temproary retirement of Elizabeth Mably at the end of the 11th Nova Clash, the position of Student Council President is left vacant with Ticy Phenyl becoming automatically sworn into office unless a challenger comes forth.
The challenge, restricted to the top six in the years class, consists of a choice of election, or a battle royale. If the challengers cannot agree to a method, it defaults to battle royale.
Encouraged by her close friends, Arnett McMillan decides to challenge Ticy for the position. Assuming that Ticy would choose the election method they prepare only to be shocked that Ticy chose to battle, something Arnett wanted from the start since she wishes to crush her rival.
Arnett McMillan and Ticy Phenyl battle at West Genetics' main stadium before the entire student body. Arnett quickly attacks with a No-Interval Triple-Accel to end the battle with a single frontal attack. Ticy's dynamic vision easily sees through the attack and she effortlessly repels it with her massive sword and incredible reflexes despite such a large weapon. Ticy's attack flips Arnett onto her back and slices through her scythe. Arnett regroups to attack again. She speeds around a stagnant Ticy and she is determined to get through her defences. Arnett's face slightly fractures as she utilizes Satellizer L. Bridget's Accel-Tempest to the surprise of many. Ticy, however, vanishes before the attack can connect. After Ticy disappears and reappears four times, Arnett states she cannot follow her rival's movements. By the time Arnett deduces that Ticy is using the Illusion Turn, the Hitman bashes her Volt Weapon aside Arnett's head, flipping Arnett with incredible force and having her crash on the ground and knocked unconscious. The battle is over is declared the winner, the new Student Council President, and West Genetics' newest Rank #1.