The Tōyoko Line is a major railway line connecting Tokyo (Shibuya) and Yokohama. The line is owned and operated by the private railway operator Tokyu Corporation. The name of the line, Tōyoko (東横), is a combination of the first characters of Tōkyō (東京) and Yokohama (横浜), and is the mainline of the Tokyu network. The section between Den-en-chofu and Hiyoshi Station is a quadruple track corridor with the Tōkyū Meguro Line.

Shibuya is a special ward in the Tokyo Metropolis, Japan. A major commercial and finance center, Shibuya houses two of the busiest railway stations in the world, Shibuya Station and Shinjuku Station. As of January 1, 2024, Shibuya Ward has an estimated population of 230,609 in 142,443 households and a population density of 15,262.01 people per km2. The total area is 15.11 km2. Notable neighborhoods and districts of Shibuya include Harajuku, Ebisu, Omotesandō, Yoyogi and Sendagaya. "Shibuya" is also commonly used to refer to the area surrounding Shibuya Station, an area known as a major center for Japanese fashion and youth culture, and one of Tokyo's most popular nightlife areas.