Just speculating that MC (male character)'s major problem is that he may have gathered knowledge of sex from porn (literally), without having a guiding hand to teach him how to focus on really giving pleasure to his partner. The fact that he did get a *koff-koff* reaction out of Secretary-san, once she gave him proper instructions, showed that he had it in him all along to "Do It Properly". And despite his losing control as the (a-hem) "climax" approached, he had her feeling all "Hey Mikey, I Think She Likes It."
In simple terms, more ... er, "coaching" is needed ... and There Can Be Only One way for that to happen (wink-wink, nudge-nudge).
"Even if you flatter me like that... I still can't stop!" "Th-That wasn't flattery!" By the way she looks, that's more like a "flattening!" á••( á› )á•—
The Comments section: ╰༼⇀︿⇀༽ã¤-]â•â”€â”€
"If this is a sexual problem I might be able to solve that"? Interesting...I mean, I suppose that's all you can really try to do considering you've decided to fill in for the actual fortune teller.
Great ending though. Well yeah, it's no good forgetting you're not the fortune teller but...You know, you should just tell him you take shifts, or like, to come after closing hours for 'special sessions'.
In simple terms, more ... er, "coaching" is needed ... and There Can Be Only One way for that to happen (wink-wink, nudge-nudge).