It is the Taisho Period in Japan. Tanjiro, a kindhearted boy who sells charcoal for a living, finds his family slaughtered by a demon. To make matters worse, his younger sister Nezuko, the sole survivor, has been transformed into a demon herself. Though devastated by this grim reality, Tanjiro resolves to become a "demon slayer" so that he can turn his sister back into a human, and kill the demon that massacred his family.
For his entire life, Izuku has dreamed of being a hero—an ambitious goal for anyone, but an especially challenging one for a boy without superpowers. That’s right: in a world where 80% of the population has some sort of special gift, Izuku was unlucky enough to be born completely normal. But that won’t stop him from enrolling in one of the most prestigious hero academies in the world to learn what it truly means to be a hero.
In the near future, a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) called Sword Art Online has been released where players control their avatars with their bodies using a piece of technology called Nerve Gear. One day, players discover they cannot log out, as the game creator is holding them captive unless they reach the 100th floor of the game's tower and defeat the final boss. However, if they die in the game, they die in real life. Their struggle for survival starts now...
