Arata's ordinary life as a high school student shatters the moment he downloads a mysterious phone game called Dragon Collection. What begins as a casual distraction quickly spirals into something far more dangerous when the game's monsters start bleeding into reality, dragging him into a conflict that spans both worlds. Armed with nothing but dumb luck and a collection of digital dragons, Arata finds himself thrust into battles against increasingly powerful creatures and rival collectors who take the game deadly seriously. His only advantage is an inexplicable knack for pulling off impossible wins at critical moments, but luck alone won't cut it in a war where the stakes are life and death. As Arata recruits allies and strengthens his dragon team, he uncovers the truth behind Dragon Collection: it's no ordinary game, and someone has engineered his involvement for a reason. He'll need to figure out why he's been chosen before the line between the digital and real worlds collapses entirely.