"I am Second Lieutenant Estelle Claire, assigned as of today!" The new recruit assigned to Komari is an outstanding student who achieved SS rank at military school. Will she be swept away by the unruly members who defy common sense...? But it turns out that Estelle is also a talent who breaks the mold of common sense. Komari, now busy with the addition of this new force, unexpectedly gets a short vacation and ends up at a hot spring resort in Estelle's hometown. However, behind the scenes, a top-secret plan is quietly unfolding that Komari is unaware of. The 'Mirage Street' that appears in the sky and the lurking 'Shadows'. Old comrades like Neriah and Karura are reunited. A series of murders begins to occur. Komari faces an unprecedented crisis as these events unfold.