Well, 'kono aozora ni yakusoku wo visual novel' could potentially tell a story where the blue sky serves as a backdrop for the plot. Maybe the promise made in the title is between the main characters. It could be a story of growth, where the characters are bound by this promise and their experiences under the blue sky shape their development.
Oh, it's very good. The way the story progresses and the unexpected twists make it a must-read. The art style also adds to the overall appeal, making the manga visually captivating.
Oh yes! The Promised Neverland manga is a masterpiece. It combines elements of horror, adventure, and drama perfectly. The plot twists are unexpected and the themes it explores are deep and thought-provoking.