"Himawari" (向日葵, lit.

'sunflower') is a song recorded by Japanese singer Ado from her second studio album Zanmu (2024).

The song serves as the theme song for the show 18/40: Futari Nara Yume mo Koi mo.

On July 3, 2023, the song was announced as the theme song for 18/40: Futari Nara Yume mo Koi mo and to be released on July 11.

[1] "Himawari" reached number 19 on the Billboard Japan Hot 100 for the week on September 25, 2023.