Concluding his three-day visit to Japan, Prime Minister Narendra Modi left for India from the Japanese city of Osaka on Saturday."Sayonara Japan! An important friendship stands strengthened as PM @narendramodi enplanes from Osaka for the journey back to Delhi," External Affairs Ministry spokesperson Vikas Swarup tweeted.Modi arrived in Japan on Thursday to attend the annual India-Japan bilateral summit with Japanese Prime Minister Shinzo Abe in Tokyo on Friday.Following the summit, 10 agreements were signed between the two sides, including the landmark civil nuclear agreement.Modi also attended an India-Japan Business Leaders' Forum and addressed a luncheon meeting organised by the Confederation of Indian Industry (CII) and Keidanren or the Japanese Business Federation.On Saturday, Modi, along with Abe, travelled by the Shinkansen high-speed rail from Tokyo to Kobe and visited the Kawasaki Heavy Industries plant there to get first hand knowledge of the technology.The Prime Minister interacted with the Indian community both in Tokyo and Kobe.This was Modi's second visit to Japan in two years.