himawari -pebble in the sky-
ひまわり ~hi・ma・wa・ri~ is a 2007 doujin PC game by Circle blank-note. Original character designs by Tatsukichi.
Subsequently, it was ported to the PlayStation Portable by Kadokawa Shoten X HOBIBOX under the title of "ひまわり (Himawari) -Pebble in the Sky- Portable" in 2010. Its two bonus scenarios were illustrated by Ichiri.
On danbooru, both versions are tagged as "Himawari_-pebble_in_the_sky-".
Not related to the below:
- Himawari! - anime series by GoDO/TAGRO.
- Himawari_(regrips) - a 2002 eroge by Regrips. See also Getchu and WIkipedia.