Japan's Emperor and Empress, now in Vietnam, have met people contributing to bilateral ties, including a man born as a conjoined twin.Nguyen Duc and his wife Nguyen Thanh Tuyen were among about 90 participants in the meeting with the Imperial couple on Thursday.He and his twin brother Viet were born with their lower bodies joined together. The birth defect is believed to have been caused by Agent Orange, the toxic defoliant used by the US military during the Vietnam War.The twins were successfully separated by a team of Japanese and Vietnamese doctors 29 years ago. Viet died in 2007. Duc has been working at the hospital where the surgery took place.The Emperor told him that he is sorry about Viet's death but he is glad to see Duc living healthily.Duc showed the Emperor a photograph of his twin children born 8 years ago, saying he named them after Mount Fuji and cherry blossoms.Duc later said he is very pleased and honored to have met the Emperor and Empress.The couple also talked with Japanese singer and actor Ryotaro Sugi. He has been engaged in charitable activities for Vietnam as a special ambassador for many years.Sugi said he introduced visually impaired Vietnamese children and others to the couple. He added he and Japanese music producer Tetsuya Komuro have been supporting such children. Sugi said the couple's visit will help to develop bilateral relations.