Continue to Be a Brave Man on Earth

Bai Muchen is a brave man who was summoned to a different world. He spent five years defeating the Demon King with his companions. Bai Muchen, who completed his mission as a hero, returned to his hometown - Earth. However, what appeared in front of him was a city that had become ruins, and monsters from other worlds could be seen everywhere. Without any equipment, Bai Muchen found that he could still use the magic and various skills he learned in another world. After an encounter with his high school pretty girl classmate and his childhood sweetheart who was a legal lolita, Bai Muchen rescued them from monsters and learned about what was happening on the earth. In order to find his relatives and to study the cause of this accident, Bai Muchen and the girls embarked on a journey. "Why can't such a powerful monster cause harm to you?" "Why can you kill such a powerful monster instantly?" "Why do you know so much information about monsters?" "Why do you think it is? Because I was once a hero~"