I was played with by my lewd sister-in-law while my brother was away on a business trip. (Kinoshita Aoi NACR-878)

To find a job, I stayed at my brother and sister-in-law's house. My brother was away on a business trip, and I had been secretly attracted to my sister-in-law, Sunflower, who was both beautiful and had a great figure. One day, while I was reading a book of erotic literature, she became interested in the "forbidden love" described in the book and began to seduce me, which I couldn't resist...