Chivas 1-2-3
English name: Sorcerer on the Rocks
Genres: Action, Comedy, Fantasy, Supernatural, Ecchi
Type: OVA, Episodes: 2
Aired: Aug 21, 1999 to Sep 21, 1999
Studio: Daume
Source: Manga
Rating: R+ - Mild Nudity
Synopsis:
Ruthless sorcerer Chivas Scotch is hired by a count named Cuttlefish to destroy an evil monster attacking a nearby village. But things go awry when Chivas fails to destroy the monster and he's forced to transfer his spirit in the body of his beautiful servant Gin Fizz. 

(Source: ANN)