Plasma (Stylized "PLASMA") is the seventh studio album by Japanese girl group Perfume, released on July 27, 2022, by Universal Music Japan sub-label Universal J and its imprint Perfume Records. The album consists of twelve tracks: five singles and their B-sides released between November 2019 and April 2022, plus four new tracks. After the release of the group's third compilation album Perfume the Best: P Cubed and embarking on their concert tour Reframe in 2019, Perfume released a digital single titled "Saisei" on November 29, 2019. The track served as the theme song to the Japanese movie adaptation of Murder at Shinji-so (屍人荘の殺人). Perfume went on their eighth national tour Perfume 8th Tour 2020 “P Cubed” in Dome in February 2020, however, most of the dates were canceled due to the COVID-19 pandemic. On September 16, 2020, the group released the single "Time Warp" to commemorate the group's fifteenth major-label debut anniversary. On July 2, 2021, Perfume released another digital single titled "Polygon Wave". This was followed by the group's first extended play Polygon Wave EP on September 22, 2021. The EP contained four versions of the song Polygon Wave, two new songs, and a concert intermission track. Despite the aforementioned pandemic, Perfume went on for more concert tours in Japan through the Polygon Wave Tour in 2021 and 2022. Perfume released a new single "Flow" on March 9, 2022. The song was used as an ending theme to the TBS Japanese drama Fight Song. A day before