Well, it's not exactly the first manga I have read, but it's the first one that I have been able to complete. What a manga it was! I'm speaking of Othello by Satomi Ikezawa. It's about a high school girl who is rather pensive and gets taken advantage of often. Another version of her appears to save the day with no recollection left to the poor girl. The manga is about self discovery. I definately recommend this!!