Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.
The ordinary salaryman, Mr. Shiro Koha, who returned home after finishing his work today. But what was unusual was that a high school girl in her uniform was sitting in front of her apartment. And she said, "Join me in the dungeon." In 2022 A.D., towers around the world turned into entrances to huge dungeons. The French Eiffel Tower, the American the washington monument, and the Japanese Tokyo Tower. At the moment of this transformation, the people who were inside the tower were swallowed by the dungeons and went missing. They included Mr. Shiro's younger sister and parents. And the high school girl -- Mr. Akari Hoshino's family right in front of her. Being taken in by her grandparents in the countryside, she earned a living by working part-time to rescue her family someday and came to Tokyo to challenge the dungeons with her little savings, relying on Shiro, her best friend's older brother. The search for the dungeons begins for two people whose families were taken in by the dungeons -- an ordinary office worker and a high school girl.