As the heroic Cutie Mars was fighting a villain, she found herself cornered one day. Suddenly, Sailor Cannon appeared, arriving to save her. Initially, Mars admired Cannon and cherished her deeply, but her feelings gradually began to change. Under the guise of ring training and gymnastic exercises, Mars started seducing Cannon, taking her body in increasingly intimate ways. As time passed, the public forgot about Mars, focusing all attention solely on Sailor Cannon. Amidst this shift, Mars became torn by conflicting emotions—jealousy and love intertwining. Eventually, possessed by a demonic force, Mars fell into darkness. In the final showdown between Sailor Cannon and Cutie Mars, who will emerge victorious? The answer lies within the shining white card?