Seiichiro Nishimoto, CEO of Shelter Co., walks into a basement where the model room for the company's nuclear shelters is installed during an interview with Reuters in Osaka, Japan April 26, 2017. With nearby North Korea increasing its show of power day by day with missile launches and nuclear tests, people in Japan are preparing for the worst by building private nuclear shelters, Reuters reports. In Japan, small companies offering custom-built underground nuclear shelters claim a boost in sales in recent weeks. Oribe Seiki Seisakusho, based in Kobe, western Japan, told Reuters it typically receive six shelter-building orders a year, but has received eight orders in April alone. Another company, Earth Shift, says it has received 10 times more inquiries for quotes this year. A Reuters photographer recently took a tour of Shelter Co.’s sales model, built in the Osaka home of the company’s CEO, Seiichiro Nishimoto. The air-tight basement features an anti-blast door, an anti-radiation air purifier, a tunnel exit, a Geiger counter, a television, gas masks, and other emergency supplies. Perhaps anticipating that residents confined underground would like to be reminded of a peaceful radiation-free world, the shelter’s ceiling is painted in bright blue skies, and has wallpaper depicting a tropical palm tree-lined beach. Nishimoto claimed in a 2009 interview with AFP that his business had seen a record number of sales in the days between the announcement and launch of a North Korean intercontinental ballistic missile over Japan at the time. (Photo by Kim Kyung-Hoon/Reuters)





Seiichiro Nishimoto, CEO of Shelter Co., poses wearing a gas mask at a model room for the company's nuclear shelters in the basement of his house in Osaka, Japan on April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)





Emergency foods are seen in the model room of Shelter Co.'s nuclear shelter in the basement of its CEO Seiichiro Nishimoto's house in Osaka, Japan on April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)





Seiichiro Nishimoto, CEO of Shelter Co., poses in front of a blast door at the entrance of a model room for his company's nuclear shelters during an interview with Reuters in Osaka, Japan on April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)





Seiichiro Nishimoto, CEO of Shelter Co., poses wearing a gas mask at a model room for the company's nuclear shelters in the basement of his house in Osaka, Japan on April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)





Radiation-blocking air purifiers are seen in the model room of Shelter Co.'s nuclear shelter in the basement of its CEO Seiichiro Nishimoto's house in Osaka, Japan on April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)





The entrance of Shelter Co.'s nuclear shelter model room, n the basement of the company's CEO Seiichiro Nishimoto's house in Osaka, Japan on April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)





A gas mask, a Geiger counter and emergency goods are seen in Shelter Co.'s nuclear shelter model room in Osaka, Japan on April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)





The exit of Shelter Co.'s nuclear shelter model room is pictured in the basement of its CEO Seiichiro Nishimoto's house in Osaka, Japan on April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)





A blast door is seen at the entrance of Shelter Co.'s nuclear shelter model room in Osaka, Japan on April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)





Radiation-blocking air purifiers are seen in the model room of Shelter Co.'s nuclear shelter in the basement of its CEO Seiichiro Nishimoto's house in Osaka, Japan April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)





Seiichiro Nishimoto, CEO of Shelter Co., demonstrates how to use the exit of Shelter Co.'s nuclear shelter model room installed in the basement of his house in Osaka, Japan April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)





Seiichiro Nishimoto, CEO of Shelter Co., demonstrates how to use a radiation-blocking air purifier in case of power outage at the model room for Shelter Co.'s nuclear shelters in Osaka, Japan on April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)





Seiichiro Nishimoto, CEO of Shelter Co., poses wearing a gas mask at a model room for the company's nuclear shelters in the basement of his house in Osaka, Japan on April 26, 2017. (Photo by Kim Kyung-Hoon/Reuters)