"Taiyou to Himawari" (太陽と向日葵; Sun and Sunflower) is the fifth single of Flower. It was released on August 7, 2013 in three editions: Limited CD+DVD, a Regular CD Only edition and a Limited Pressing CD Only edition. Limited CD+DVD edition includes a photo book in a digipak package and the song "what i want...".
The song was pre-released digitally a week earlier, on July 31. A 2016 version of the song, including only Washio Reina vocals, was pre-released on May 25, 2016 and later included as the second b-side of their twelfth single "Yasashisa de Afureru You ni".