Toshiki Takayama (Taka) and Oshita Yuji, who had retired as detectives and opened a private detective agency in New Zealand, returned to Yokohama for the first time in 8 years….

The seven secretaries who consist of the “Shadow Army” enjoy peaceful days. They receive a new request from Koichi Ogata, who runs a ramen restaurant in Nagano prefecture. He is…