There is a total of 18 volumes to Fushigi Yuugi's manga.

The first 13 are the same storyline as the TV series anime. And the last 5 volumes, from volume 14 to 18 are related to the second OVA.

The following covers are the Taiwan version covers... yep they are mine, cause I got them from Taiwan. I saw other covers from different countries they all look similar.

I saw the one from Europe... it're REALLY nice! The cover is watery blue, and has a watery pattern too. ^^