Parallel Paradise

During an ordinary school day, Youta notices a mysterious figure entering his building. Before he can react, the entity materializes beside him and pushes him from the third-floor window. He plummets into a bizarre realm where dragon-like creatures roam. There, Youta encounters a young paladin and soon learns an astonishing truth: he is the sole male on this entire planet, and every inhabitant experiences an overwhelming physical reaction to his mere presence. Is this world truly a paradise, or something far more treacherous?