I usually don't rank visual novels high in the gameplay category, but I had to make an exception for this one. The point-and-click gameplay along with a detective fiction esque music and design style just screams Old Flash Games vibes, and it warmed my heart.
The story was quite short and I was left wanting for more, but that's far from a complaint. What's there to complain about a wholesome detective fiction story with the Hifuu girl(friend)s?
I found a notable bug in the game however - in the sailor's bedroom with the matches and code scrap, it seems that examining items again and again too quickly makes it so that when you examine them again, you get booted back to the title screen, and saving the game locks it in this state. It's not a big problem since the game is short and you can skip your way back to that part, but just something to consider for future works.
Another small complaint is that the cannonball blended in a bit too much with its surroundings and was a bit difficult to find. Maybe a light glow over it after triggering Maribel's cannon idea would be nice?
A lovely visual novel overall - I was aching to play this first as soon as I finished my jam submission and I was not disappointed!