This is a world where humans and the conscious beings known as K'lulu coexist. The study of the essence and mechanisms of K'lulu has not yet reached any conclusions that have achieved widespread consensus. However, it is generally agreed that it is a form of life that exists in harmony and resonance with all human mental and physiological rhythms, capable of interacting with humans during cognition, thought, or communication. Humans must maintain a benign balance with K'lulu to ensure the stability of their sanity and cognitive abilities. However, only a very few humans can visually identify, physically perceive, and manipulate K'lulu, and conduct systematic research on them. We call these individuals "Tuners." This summer, Mioi (barely) passed the professional exam and came to Centephonia City as an apprentice Tuner, along with Kasula and Syss. This is a coastal city with nearly two centuries of history but not much communication with the outside world, which, however, has attracted the attention of the Tuners Association in the past decade. As the routine tasks were carried out, this metropolis began to exhibit abnormalities, with phenomena of group dysregulation becoming increasingly common and severe. At the same time, two mysterious Tuners who had received special commissions also arrived in Centephonia City... Features Exploration Unravel the Secrets of Centephonia CityGain unique encounters through random routes, with each successful patrol bringing you closer to the "truth." Card-based City PatrolFlip through the perilous mission cards, respond carefully, and make the best adventurous decisions for your team. Combat Magical Girls Forging AheadExecute splendid combos with a single click, block at the right moment, and engage in fast-paced combat that's simple in attack and defense but infinitely variable!