Dacchi Wife Omae no Tsuma wa Ore no Mono  

奪痴人妻（ダッチワイフ）～おまえの妻はオレの肉人形（モノ）～

One day, Masaki's mother tells him that he actually has a twin brother, Masaya. Masaya was adopted by a rich family when they were kids and he is now married to a beautiful woman, according to her. He gets mad to hear it and makes up his mind to destroy their happy life. At first, Masaki plans to abduct and confine Masaya and take his beautiful wife as his own...