Today I'm going to rape my brother's wife.

Mako is a wife who has been married for three years and lives happily with a sincere and kind husband. One day, Shinji, Mako's stepbrother to her, comes to the Oda family. "Sister-in-law, I want you to lend me some money," Mako is confused by the sudden request. Shinji is furious at Mako's attitude of stubbornly refusing, saying, "It's impossible unless you talk to your husband," and forcefully pushes Mako down and rapes her. To make it even more exciting, Shinji came to the Oda family the next day too...