http://www.dlsite.com/books/work/=/product_id/BJ068244.html

Plot: She is startled by the proposal to live together when they just met. So he asks, "Then how do you plan on working as a prostitute? In that case, let me teach you how to make your partner feel good."

She cancels her appointments and fucks him all day, and even though she tells him to try and hold out until the night he keeps coming early because "A girl's body is 8 times more 気落ちいい" etc, (IDK where they get these numbers.)

The next day she goes off to her job and washes a virgin, except he looks at her with wild lust and tries to enter her without permission, but is stopped by the boss. When she tells him what happened, he says how dreadful, were you scared? She roughly says, "A little, but I was thinking more about how you manage to do it everyday."

Base +18, pesc +8, Cordially +6, Gosei +6