Early 2000s fan-translation groups often bundled games with installer files named things like setup_inall.exe (short for “install all”). A user forgetting the exact file name might have searched “himawari wa yoru ni saku inall” looking for a complete download pack that includes all routes, CGs, or patches.
Before you start your search, determine which version you are looking for, as the series exists in two main forms: : The original work by artist Takeda Hiromitsu (publishing as Anime (OVA) : A single-episode web animation released in January 2021 Studio T-Rex , directed by Ken Raika. 2. Where to Search searching for himawari wa yoru ni saku inall