The pitiful me who was informed that my best friend and my female friend, whom I had secretly longed for, were going to start dating. My misery only deepened as I watched the two of them flirt without a care in the world about me... Amidst this, my best friend went out, leaving me alone with her, and I was seized by a mischievous impulse to tease her, but it backfired. The atmosphere became awkward, and just when I thought it was hopeless, she said, "I'm my best friend's girlfriend, so it's not okay to date, but it's okay to cosplay, right?"!?