When I Summoned A Call Girl, My Former Classmate Came (Pre-Serialization)

I've been drawing erotic doujinshis for two years now. The only review I've ever received is “The author is definitely a virgin.”. Having no experience with women, I decided to try summoning a call girl. But who shows up? It's a former classmate from high school! And not just any classmate, but one of the popular girls I secretly admired…?