SHE'S 7th single "Blue Thermal" features the theme song and insert song from the animated film "Blue Thermal". Blue Thermal" is an animated film based on Kana Ozawa's manga "Blue Thermal - Aonagi Daigaku Taiikukai Kokubu-". Limited edition bonus DVD includes excerpts from the performance "SHE'S 10th Anniversary "Back In Blue"" held at Hibiya Part Concert Hall on June 26, 2021 (seven tracks).