To help you get exactly what you're looking for, could you tell me:
Depending on what "Inall" refers to (likely a typo for "install," "online," or a specific site name), here is how you can locate the media: searching for himawari wa yoru ni saku inall
If it's a song:
"Himawari wa Yoru ni Saku," which translates to "Sunflower Blooms in the Night," is a poignant and thought-provoking Japanese novel written by Yuzuki Muranaka. The novel tells the story of a young girl named Himawari, who is struggling to come to terms with her own identity and sense of purpose in a world that seems determined to constrain her. To help you get exactly what you're looking
“Inall isn’t a typo. It was the name of the scanlation group that translated the manga version. ‘Inall Scans.’ They disbanded in 2012. Their site is gone, but I have a partial cache of the page that mentions the sunflower oneshot. I’ll share if anyone DMs me.” — , Discord It was the name of the scanlation group