Isekai Trip Saki de Tasukete Kureta no wa Hitogoroshi no Shounen deshita

An ordinary day takes a drastic turn when the protagonist accidentally falls through a manhole, only to find herself abruptly transported to an entirely different world. Stripped of everything familiar, she is thrust into a strange and unknown land where the rules of her previous life no longer apply. With no understanding of her new surroundings and no clear path back home, she is left with no choice but to wander through this foreign country, struggling to make sense of the unfamiliar landscape that now surrounds her. Her desperate attempt to navigate this bizarre realm quickly turns perilous when she draws the unwanted attention of a group of violent thugs. Cornered and defenseless in a place where she knows no one, her situation seems hopeless as her pursuers close in. However, just as danger reaches its peak, an unexpected figure intervenes to save her life. The person who steps in to protect her from certain harm is not a heroic knight or a kind stranger, but rather a young boy with a chilling secret—he is a killer. Now bound to her unlikely rescuer, the protagonist must grapple with the unsettling reality that her survival in this dangerous new world depends on someone stained by murder.