After the Honkai impacted this world and humanity was forced to abandon the planet, Adam initially thought he would face a difficult life ahead. However, as time passed, Adam discovered that many strange people seemed to have appeared around him. A certain green cabbage: Captain, please complete today's resource gathering mission. A certain cook: Adam, please also complete today's mission. A certain white-haired loli: Senior! Where are we going today?! A certain pink-haired fairy: Young man, where are we going to play today? ………………………… Regarding the increasing number of girls around him, Adam declared: I'm not interested in women. Women only slow down my garbage-gathering speed.

Naoto Yamashita, a failed art student, travels back in time to become a noble Celestial Empire traveler and a high school student in Japan. Here, he discovers his childhood sweetheart, Kusunoko Saiki. His best friend, Sakuta Azusagawa, is also a student at a strange club called the Service Club. Meanwhile, a rising manga artist, Yumeha Ashiroki, is also in the manga world. However, none of this has anything to do with Naoto Yamashita. As he desperately prepares to pay off his thirty-year mortgage—in short, this is the story of an ordinary high school student's ascent to become Japan's top manga artist.