Both songs on the A-side, "Tadoritsuku Basho" and "Oxalis", were a part of the soundtrack of the biopic film , with "Tadoritsuku Basho being used as the theme song". The lyrics of the song were written by Mākii, vocalist of the group, who was set to star as the female lead in the film.
The two songs on the A-side, "Tadoritsuku Basho" and "Oxalis", were featured in the biographical film , with "Tadoritsuku Basho" being used as the title track. The song's lyrics were written by Mākii, who was also set to star as the female protagonist in the movie.