Everyone else is a Returnee

The following content is intended for mature audiences and may contain sexual themes, gore, violence and/or strong language. Discretion is advised.

This is a fan drawn manga of this WebNovel. All credit for the story goes to Toika. In a primary school excursion I was left behind alone. In a junior high school camp I was left behind alone. In a high school field trip I was left behind alone. In the end I became a uni student but so what? This time I was left behind from the entire human race! While everyone left this world I was the only one to protect Earth! A legend will start when the human race returns and a disaster strikes!