Tokyo is well-connected by airways to the rest of the world, so plenty of airlines across the world, including Asia and India also connect to Narita Airport. These include Air India, Emirates, Jet Airways, Lufthansa and Etihad. Flights to Tokyo can be boarded from any major Indian city.
The criteria for Visa applications are enclosed here: http://www.mofa.go.jp/files/000121950.pdf
Tokyo has well-established connections to every major city around the world, and every major airline lands at Narita Airport, the most important airport in Tokyo.
From Narita Airport, one can use the road to travel to Tokyo.
Tokyo is the centre of railways and the subway in Japan, with connections to every single city in Japan. The subway and the railways can be used with a rechargeable card, but a map is a must as some of the railways and subway lines are slightly difficult to navigate.
Tokyo has a dense network of railway lines, roads and subways all operated by different companies, under private partnership. This may be of some inconvenience to tourists as each company has a different map for its own territory. Hence, it is advisable to download the Tokyo Subway Map available exclusively at http://www.tokyometro.jp/en/subwaymap in 8 different languages. Japanês most prominent railways line is the JR Yamanote Line, which connects many cities together, conveniently placing Tokyo at the centre. Prepaid IC cards are the preferred way to get around Tokyo, for every service accepts these cards, including cabs and buses. Only on days tourists consider using many subway lines to travel around Tokyo, an unlimited travel pass is advisable - Tokyo Free Kippu (JPY 1590) and Tokyo Metro 24-hour Ticket (JPY 600) are two options tourists may consider. The Japan Rail Pass and JR Tokyo Wide Pass are valid only on JR trains and the Tokyo Monorail. They cannot be used on subways or any other non-JR train.