The "Himawari wa Yoru ni Saku OVA: Sunflower ha Yoru" franchise has also had an impact on fashion and merchandise. The series' iconic characters and imagery have been featured on numerous merchandise items, including clothing, accessories, and collectibles. The franchise's style, which blends elements of Japanese street fashion with motorcycle culture, has inspired many fans to adopt a similar aesthetic.
): The husband whose professional mistake initiates the story's events. Kamekura Gouzou (voiced by Hoshi Hitori himawari wa yoru ni saku ova sunflower ha yoru hot