Jinrui wo Metsubou sasete wa Ikemasen

Twenty-six-year-old salaryman Osamu Kawakita expects nothing more than a quiet journey home after another ordinary day at work. Instead, his routine is shattered by an unexpected encounter with an extraterrestrial being named Lilin. Far from being a mere visitor, Lilin belongs to an alien race actively plotting the invasion of Earth. However, circumstances have left her stranded on the very planet her people intend to conquer, placing her unexpectedly under Osamu's care. What begins as a bizarre twist of fate quickly escalates into a desperate mission with unimaginable stakes. Osamu learns that humanity has exactly five years before Lilin’s species arrives to eradicate all life on the planet. Faced with this impending apocalypse, he realizes that his only hope lies in the stranded alien child herself. He must take on the daunting responsibility of raising Lilin, guiding her growth and nurturing her compassion in the face of her species' destructive intentions. The clock is ticking relentlessly toward extinction, leaving no room for error. If Osamu can successfully shape Lilin into a kind-hearted individual, she may become the key to preventing the annihilation of the human race. Yet, if he fails, the world as he knows it will be wiped away forever, making every moment spent raising her a critical battle for survival.