A Caricature Of Reincarnation

student of private academy clanmine, shirogane mitsuki, repetitively experiences a dream wherein an elder brother he doesn't have dies protecting him. an absolute hierarchy system that is determined by the uniform, an elder brother who shouldn't exist, and an un-enterable clock tower that nobody has ever set foot in… when the hidden truth behind this warped school is brought to light, a fateful adventure awaits!