This sound is from Zero Two Soundboard

Zero Two is a fictional character in the Japanese anime television series Darling in the Franxx. She was designed as the most prominent character and icon of the series. She is well known for addressing Hiro, the protagonist, by the eponymous term "darling" Her personality has been well received by both fans and critics.
See also: Moon Zero Two, Bravo Two Zero, Bravo Two Zero (film), Bravo Two Zero (novel), ZeroZeroZero, and Digimon Adventure 02.