My brother’s wife who greets me when I return to my parents’ house. I envy my brother who is beautiful, kind to me, and has a wife. Even though I know it’s a bad thing, I imagine my sister-in-law’s disgusting body as “Ah, my sister-in-law… my sister-in-law…”. In the meantime, I visited my brother’s business trip for three days. Uncontrollable desire greedily desires the body of the sister-in-law. Even though I knew that “Nao” was a bad thing, he responded to my thoughts… 3 days of secrets for just the two of us.