most pf the manga i've read are new and old some are even in japanese.
heres some
vampire girl (must read totally sweet and tragic)
rod both die and dream. (advantures of the paper masters)
evil's return (a truly great and kick butt manga but with a tragic ending )
chibi vampire (like the anime karin)
my hime (a boy find out he a key to two girls.)
guyver (young high school students find alien armor and becomes the guyver.)
dna^2 (this manga is really for the guys to read, trust me girls im not like that.. at any rate if you guys want to there a game but look for "sim man" on google )
fruit basket (its a truly entertaining manga and it a must read if your into some high school drama,romance, and a little into the supernatural. )
varinate (horror manga, a family of three brutally murder by unknown entity, or were all off them kill; innocent teen girl suddenly discover her worst nightmare comes true and her left arm isn't hers )
ill add more if i can remember the thousand of them.