The complete collection of incest

I was born into a prominent family in Kunming, Yunnan. I have been accustomed to the life of a young master in fine clothes and fine food since I was a child. My father was one of the leading wealthy businessmen in Kunming during his lifetime, and he married two people. This wife is a pair of sisters who come from a well-known family. My grandfather is a famous miracle doctor in Yunnan. My mother and three sisters are versatile and beautiful. They are famous sisters in Kunming. The two sisters who married my father together back then were my aunt. She was the eldest wife and gave birth to two older sisters and one younger sister. My mother was the second wife and gave birth to me. My younger aunt married Wang Wei, the commander of the Kunming Garrison, and lived a very happy life. The only flaw was that she never had children. My father also has a little sister who is ten years younger than him. When I was three years old, my father unfortunately died unexpectedly. After the grief, our family was not frightened by this sudden disaster. We did not fall apart as outsiders guessed, but lived together warmly and happily relying on each other; because My mother gave birth to me, the only child of three generations of the Zhang family, so my mother was in charge of the huge family property my father left behind warning [No NTR - No Yuri - No sharing - No system that assists the protagonist - No mind control -Incest - No drugs or potions that influence the girls - Hardcore Inseki - A lot of Netori and Stealing - Harem - Slice of Life Romance - No unnecessary Drama - Finally a very competent protagonist]