NACR-646 Take care of your sister-in-law when your brother goes on a long business trip

My brother's wife, who lives with me, Umi, seduces me every time my brother goes on a business trip. Furthermore, during the 3 days my brother was away on business, I brought a man into my house and bragged about my affairs as if to show off to me. But I could never bring it to my brother. Because I also had an affair with my brother's wife...