Gibo no Toiki ~Haitokushin ni Tadayou Haha no Iroka~

Kaito has a normal life until his mother passes away and his father marries a young and beautiful woman named Sayoko. The biggest dream of Sayoko is to have a child but his husband doesn't want to. When Kaito founds that his father cheats Sayoko with a younger woman he decides to make her wish come true by any mean posible.[From AnimeNewsNetwork]