If you were actually looking for the story of the popular sci-fi visual novel/anime (featuring a boy named Hinata and a girl with pink hair named Aqua who is an alien), the plot is very different:
Kai stepped forward, breath shallow. He had been told—by no one, in fact; the idea had come from the small grief of missing her—that sunflowers belonged to the day. How could they bloom under stars? Yet here they were, and the answer felt like a story someone told in the middle of a long night and then handed you as truth. himawari wa yoru ni saku full