Don't worry, it's translated.
All the others have mediocre art. You would expect such art from the 1990's, after all.
Rance I (1989), Rance III (1991), Rance IV (1993), Rance 4.1 (1995), Rance 4.2 (1995), and Kichikuou Rance (1996) are all translated.
If you want something close to Sengoku Rance in terms of gameplay, Kichikuou is the way to go.
But it references a lot of things from the previous games.
If you want to, click my sig. It should link you to the thread about Alicesoft games.