Takahiro Nishijima (born September 30, 1986) is a Japanese singer and actor. In 2013, he began his solo career as Nissy, becoming a self-produced artist. In 2019, he became the youngest Japanese male solo artist to complete a four-dome tour. In 2022, he achieved his largest-scale tour yet with the Nissy Entertainment 4th LIVE 〜DOME TOUR〜, becoming only the second solo artist in Japanese history to tour all six major domes nationwide. The tour attracted a total of 450,000 attendees, with all tickets selling out. In 2024, Nissy made history as the first solo artist ever to complete a six-major dome tour for the second time, once again drawing 450,000 fans.