Genjuuya

One year after events of Dragon no Tiara.
The Highlandy Republic is a democratic country blessed with mountains and forests and as such desired by its neighbors. It managed to retain its form, but the chaos of phantom beasts outburts around its borders influenced it a lot.
"Fighters" guilds spread to undertake various works for states and individuals. "Hunters" guilds specialize in hunting phantom beasts for bounties. And "Gentleman's shop" trains phantom beasts to satisfy sexual needs of population. Main character becomes administrator of one of such shops.

[From vndbreview]