The mafia King's Pet [M×M]
My sister had a fit athletic figure, with all her shape well defined by the rigorous training she puts herself under.
Comparing me to millen was like comparing an ant to a lion.
That was my sad life. A defenseless Male omega. My sister and I had a good relationship when we were small. We were so close as twins and would do everything together.
but as times continued to pass, the disparity between the two of us created a huge tension, drifting us further away from each other. As if that was not all, my sister, the precious jewel of the family, the only female alpha, mysteriously fell sick with a serious illness.