NWJK-039 - My son started looking at me like a woman, and we finally crossed the line... Mio Kanno

The son's performance is so skillful that he doesn't look like an average son at all. The content is so advanced that the title would be better suited as 'A Mature Woman's First AV Actor.' It doesn't depict a mother leading an inexperienced son; the title and content seem quite disconnected. However, if you view it simply as a mature-themed work, it might be acceptable.