I just want to mention that famous real characters with only one eye are Xiahou Dun (Romance of the Three Kingdoms) and Date Masamune (a famous daimyo nicknamed the "one-eyed dragon"). They're often portrayed in manga/anime related to the Romance of Three Kingdoms period (like Koihime Musou) or the Sengoku era (like Sengoku Basara). You can look at them on wikipedia if you want to know more. Since Date Masamune is kind of an iconic figure there are some manga where is the main character, i.e.: Date Masamune (YOKOYAMA Mitsuteru) Mikazuki Ryuu Ibun - Date Masamune Koushi Date Masamune There are probably more that I'm probably not aware of. For Xiahou Dun I admit I'm not very knowledgeable, maybe someone else know more.
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