Only weeks after the end of the "Magical Girl Incident" that was brought about by the alchemist Carol in her attempt to dissect the world, Hibiki Tachibana was fighting hand-to-hand with the most supreme enemy known to man, and barely managing to hold it back. That enemy was none other than summer vacation homework. Her duty as a student was an unavoidable and cruel fate, it mercilessly attacked with no means of resistance. How did it come to this? She asked herself as her soul was slowly crushed under the pressure, reflecting back on happier times. She went to the beach. She went to the mountains. She even promised to show her new friend around and under that pretense enjoyed numerous summer festivals, staring up with her mouth agape at the beautiful fireworks.