Each town inn has 2 scenes when you sleep there (2nd and 3rd choices), with tentacle armor variation.
At first town, go to the house in the bottom left corner, talk with the guy there to receive a quest. Come back here after the molest scene in the shopping center.
Talk with a guy in the top left house while Lucida is naked for a scene.
Go outside, lose to monster for tentacle scene.
Go north to orc forest, there will be a girl cornered by a monster, save/ignore her. Unknown effect.
At the end, there will be three orcs, beat them (after losing to them at least once, of course).
Go back down, and east this time to second town.
Go to top right house (department store), 2F, talk with the red hair guy in green shirt. You will get Dress. Take it back to first town for a rotor (Batt's molesting skill).
Go south, beat/get raped by some guys, and get some paper there. If you lose, you will have to go back there again to get it.
Go into the castle.
Talk to the captain in bottom right corner, then upstair, talk to the rich guy.
Go back down, and up the bottom left stair to your room, choose first choice to sleep. Lucida will be alone at night. Go to the rich guy for another skill, or just go to sleep.
Next day, go down the stair at the bottom right corner.
Pretty much straight forward from there on, go on until you beat the ogre (or lose).
End of demo, I guess.