 If you liked
Joou-sama no Inu
|
 ...then you might like
Tenchi Shinmei!
|
The almost exact same idea of some supernatural entity feeding off of a specific girl's energy through kisses in order to destroy evil spirits or monsters, etc. They're both supernatural, romantic shoujos, but have a bit of a horror-ish twist. Both really interesting stories and have realllly cute guys (: