can't remember the name

there's a story that i lost that i really enjoyed reading but i can't remember the name. it's about an adult woman who's an author (possibly has blonde hair or reflects in the manga) but she does smut books but either has no experience or lacks it. she was told that she needs to go out and get more. she decides to ask in the plaza if anyone was willing to help her with sexual experiences. one guy stopped her before any weirdos. he was hesitant at first but agreed to help her. it was supposed to be one time thing for him but he caught her doing it again in the plaza so he was willing to be the muse for her. they do eventually end up together. please help guys!