Sure, Blue Eye Samurai is a manga. It stands out for its creative world-building and the depth of its narrative. Many fans appreciate its combination of action and drama.
No, it's not a real story. It's probably made up for entertainment purposes. Usually, such names and concepts are part of fictional worlds crafted by authors or creators.
Most likely, 'The Blue Eyed Samurai' isn't a true story. Fictional works like this are designed to captivate the audience with imaginative plots and characters that aren't based in reality.