He separates from the guys in his class who became heroes and enjoys the other world on his own.

In a lively classroom during lunchtime, a boy sat alone, eating his lunch while gazing out the window. His name was Kosuke Nakagawa, an 18-year-old high school senior. He always ate alone. Despite being in this class for over two years, he had no close friends. He was a lone wolf. After lunch, as the afternoon classes began, a sudden, strange event occurred. "Hey! What is this?!" "What's this?! It's glowing?!" "Ahhh! I can't move!" A faintly glowing, geometric pattern emerged on the classroom floor, and everyone became immobilized at their desks as if they were glued in place. "Calm down! Calm down!" the math teacher shouted, clutching the blackboard in a panic. But amidst the chaos, there was one calm student. "So, it's finally here..." As everyone else panicked, Kosuke Nakagawa simply sm