"Yakusoku wa Iranai" (約束はいらない, lit.
Released on April 24, 1996, it was her debut single under composer Yoko Kanno.
The song and "Tomodachi" appear in her debut anime, The Vision of Escaflowne.
Both songs were included on Sakamoto's solo debut Grapefruit, with "Tomodachi" re-recorded in English as "My Best Friend."
In 2023, the song was sampled by JPEGMafia and Danny Brown on their song "Kingdom Hearts Key", (which features additional vocals by rapper Redveil), the ninth track off their collaborative album Scaring the Hoes.