Oshi to Otona no Renshuu Hajimemasu

"I want to listen to my idol's request!"

26-year-old Kasumi works at a convenience store on campus. She has a sexy figure and is rumored to be experienced, but in fact she has no experience. Now that she's a university student, Iwakura-kun, a former child actor who she has been supporting for nine years, appears in front of her!? He has made an unbelievable request of Kasumi to help him prepare for his role...!? An exciting love comedy about increasing your experience with your idol begins!

(Source: Kodansha, translated)