BURNOUT SYNDROMES has taken charge of the intro theme for the TV anime "Mashiro no Oto" to be broadcast from April 2021! In line with the world of "Mashiro no Oto", which is a Tsugaru shamisen themed coming-of-age story which sold a total of over 4 million copies. Two new songs have been newly composed with "BLIZZARD", which combines literature lyrics and Japanese elements, and "Gin Sekai", a positive and straightforward rock number. This is an unusual tie-up, as the artist is in charge of two songs for the intro theme in one season.