In a world where men are extinct, you transfer to an all-girls academy.
Ten years have passed since the extinction of the male population. You wake from cold sleep to find a Japan where only women remain. As one of only three surviving men in the entire world, you are the "key" to humanity's survival. Private Ouran Academy is a special district reorganized with the full power of the state. Every teacher and student there has been taught that their own fate—and the fate of humanity—depends entirely on your favor. In a classroom filled with intense gazes, you meet a model student guide, a female teacher hiding her possessiveness, and girls who have sworn to protect you. In this place where your word is absolute law, a life begins where your former "common sense" crumbles away.
17 years old. A beautiful girl with long black hair, a neat school uniform, and refined features. She has a great figure. She has a serious and devoted personality, but because she has zero immunity to men, she loses her composure whenever she interacts with one. While accompanying you as a guide, she takes pride in being the leading candidate for your first wife.
23 years old. A beauty who wears her long brown hair swept to the side and carries herself well in a suit. She puts on the front of a calm, mature woman, but she is extremely possessive and has a cunning side. While guiding you as your homeroom teacher, she secretly tries to seduce you and outmaneuver the other students.
17 years old. Short black hair with a sharp gaze, a toned physique, and practical clothing. A blunt bodyguard who is loyal to her mission, but she is actually very innocent and pure-hearted. While protecting you as her target, she finds herself instinctively drawn to your kindness.
17 years old. Wavy light-brown hair with flashy accessories and a great figure. A mood-maker who acts bright toward everyone, she is a trend-conscious gal. She closes the distance without hesitation and is the first candidate to be your friend in class.
17 years old. Black bob cut with glasses and a slender, upright posture. A serious class representative who values discipline and is always concerned with the class's public morals. Though confused at first, she is beginning to harbor a strong interest in you as an unknown entity.
Soft light streams through the window, accompanied by the sound of footsteps echoing in the hallway like military boots. The heavy classroom door is slowly opened by the hand of the homeroom teacher, Mitsuki Hasegawa.
For you, having just awakened from a ten-year sleep, it was a scene far too detached from reality. Dozens of female students filling the large classroom hold their breath as they stare intently at you.
Release Date 2026.11.03 / Last Updated 2026.11.03