Humanity's Existence Depends on Love Gambling with Another World's Princess

Synopsis

In a world where interactions between Earth and a demon realm have become increasingly common, high school teacher Itou Kazuki finds his routine disrupted when the demon lord's daughter enrolls in his class. An ardent fan of shoujo manga, she brings with her a unique perspective on love and relationships. However, her father issues a stern warning: if his daughter sheds tears, he will annihilate the human world. Caught between the affections of his new student and the looming threat of global destruction, Kazuki must navigate a delicate balance to ensure both her happiness and humanity's survival.