There's no Manga series that is better than Minako Narita's Cipher. My cousin made me read it when I was 14, and I had been the a big fan of this series ever since.
Minako Narita's style of drawing is very handsome, and she really puts a lot of work in every single piece. Her characters are absolutely adorable, and they are so real, just like people around you. Through the delicate illustrations of her character, Minako Narita told her audience profoundly touching stories that are full of livelihood, warmth, laughter and tears.
Cipher is one of her most successful piece. It is about a pair of twin brothers, Cipher and Siva, and their relationships and lives. It was serialized on Hana to Yume 1985-90,12 volumes. It was one of the most famous Shojo Manga which made Narita Minako the most popular 3rd generation Shojo Mangaka. Its beauty does not fade with time. Cipher remains to be one of the best Manga series over the years.
Personally, I can't think of anything better to do than making a page dedicated to my favorite Manga. As you can see, I am a big addict of Cipher. I have special memories attached to this Manga which makes it even more special to me.
Special thanks to Cipher and Siva Image Gallery. It's a shame that this site has died with XOOM. There's no other English site that contains a better Minako Narita collection than this site does.