It’s a old manga like Fushigi Yuugi where a man from old times ends up in modern times to defeat his enemy from his time? But his enemy in modern times was a girl with the same name but it turns out she came from his time as well and was a female disguised as a man the whole time. (I think or she was reincarnated) I strongly believe it starts with an R for the females name and the cover is her with the man who came to kill her.
It’s a old manga like Fushigi Yuugi where a man from old times ends up in modern times to defeat his enemy from his time? But his enemy in modern times was a girl with the same name but it turns out she came from his time as well and was a female disguised as a man the whole time. (I think or she was reincarnated) I strongly believe it starts with an R for the females name and the cover is her with the man who came to kill her.