Unfortunately, the current artist can't work on the game anymore
he just emailed me with his reasons.
Anyway, he already made the main cast, so the current plan for now is use PSCD artist to do all the romance CGs: so at least those are done! Even if the art style is different, is common in games to have the CG done by a different artist (see SOTW for example).
Then after all the romance CGs are done, we'll see if to redo the main cast as well, or try keeping the existing art. Is a pity because I really liked his style, but even PSCD artist is quite good, so at least it's not all bad news!