Thank you for playing! I agree, I was planning on adding feedback and some dialogue to the game to convey the story but I ran out of time. I will definitely incorporate this feedback at some point.
The idea with the mechanic was originally to allow the player to collect flowers with different possiblities of certain flower appearing and have a catalouge of the flowers and perhaps the flowers themselves could add another mechanic, but I didn't get that far unfortunately. Mostly I think the mechanic allows you to complete the objective in a multitude of ways - rather than simply touching every tile with the character you can also shoot them (which I think is really satisfying to do), but I do agree that the mechanic needs more of a purpose and I will look into it!