Rakuten Group, Inc. (楽天グループ株式会社) is a Japanese technology conglomerate based in Tokyo, founded by Hiroshi Mikitani in 1997. Centered around the online retail marketplace Rakuten Ichiba, its businesses include financial services utilizing Fintech, digital content and communications services such as the messaging app Viber, e-book distributor Kobo, and Japan's fourth-most used mobile carrier, Rakuten Mobile. Rakuten has more than 28,000 employees worldwide, operating in 30 countries and regions, and its revenues totalling US $12.8 billion as of 2021. Rakuten was the official sponsor of the Spanish football club FC Barcelona from 2017 until 2022, and the Golden State Warriors of the NBA as of 2022. It is sometimes referred to as the "Amazon of Japan".

Setagaya is a special ward in the Tokyo Metropolis in Japan. It is also the name of a neighborhood and administrative district within the ward. Its official bird is the azure-winged magpie, its flower is the fringed orchid, and its tree is the Zelkova serrata.