Naga by Takahiro Yoshimatsu
Takahiro Yoshimatsu is the character designer of the Slayers OVA series, as well as Jubei-chan, and Ninja Scroll TV. Naga is the ultimate rival of Lina Inverse who herself is a sorceress... although her proficiency with using her chest seems to be much higher than her magical ability ... ^^;; ... this was a gift from a good friend... thanks so much ; ;