I absolutely loved it !! I would recommand the story because it is different : I believe what's makes the story special is the fact that the main characters are not overpowered, there is humor, and also dark content which makes it roller coaster of emotions and an enjoyable ride !
As for the story, alchemy and fantasy makes it more intresting because mostly everyone knows what happened during the Hundred Years War but here these magical elements make way for unexpected scenes and so the story becomes even more intriguing !
The music is also captivating and the piano is really great for emotional scenes throughout the epidodes!
I really like the charcaters developping from the 1st to 12th episode and how they change! You can see them turn from kids to adults episodes by episodes all while keeping humor !
The animation and drawings are beautiful, especially the charcaters design along with the ones for fights and emotional scenes.
Overall I would truly recommand it for an audience that what to see something different. It is a special anime in it's own way and that difference is what's makes it intriguing and captivating at the same time !