Query 1:
Purpose of the game? To serve out your prison sentence and become a functioning member of society of course! I mean its that simple right? Though, being in prison would kinda suck...
Query 2:
The game is currently planned to be around a 70 - 30 split for story - gameplay. The setting is all placed in one location and we use real-time movement to move between the visual novel dialogue scenarios (compared to menus in a traditional visual novel). It also contains combat and rpg character building, but this is more "dungeon" based. The best way I can describe the way the game plays out is that it flows similar to games like persona 4, but instead of it being turn based its action based combat.