Here’s a random picture I found for Himawari! The person with the brown side-hanging ponytail on the right is voiced by Shiraishi Ryouko, who is the awesome. In other news, the megane girl in the top left is voiced by Hirano Aya.
Random aside: I’m a firm believer in not Westernizing Japanese names. Watch/read School Rumble, Kobayashi Jin consciously takes note of the fact that Western names are first-last and Japanese names are last-first with his character Harry Mackenzie (which, if you’re not familiar with School Rumble, is pronounced the exact same way as Harima Kenji, the male protagonist).