High-Rise Invasion

High school girl Yuri wakes up on the rooftop of a towering skyscraper, trapped in a strange and terrifying world. She watches in horror as a masked man brutally kills someone with an axe. Now, her only goals are to survive, find her missing brother, and escape this nightmarish place. But danger lurks everywhere-not just from the inhumanly strong and cruel Masks, but also from desperate survivors who have lost their humanity in the twisted high-rise world.