While "Bonjour♪Koiaji Pâtisserie" initially appears to be a charming and delightful shoujo manga, it ultimately falls short in several aspects. The plot is incredibly predictable, and the characters lack depth and development, making it difficult for readers to connect with them. Despite its shortcomings, the art style is visually appealing, although it doesn't compensate for the lack of substance in the story.
In general, "Bonjour♪Koiaji Pâtisserie" is a forgettable one-shot that doesn't offer anything new or exciting to the shoujo genre. It may appeal to fans of sugary-sweet, fluffy romance stories, but it's unlikely to leave a lasting impression.
However, it's essential to note that this view would probably change if I ever used this one-shot as an introduction to the anime. It was created as a companion to the anime series, which aired in 2014, and it may not do justice to the full story, characters, and world of the anime. It's conceivable that the anime fleshes out the characters, adds more complexity to the plot, and offers a more profound emotional connection than the one-shot.
In conclusion, "Bonjour♪Koiaji Pâtisserie" is a one-shot that falls short of expectations, offering a predictable plot and shallow characters. If you're a fan of shoujo romance and baking, you might want to give the full anime series a chance to see if it offers more than the one-shot.