Story
OVA by Collaboration Works petit — Fall 2017, 4 episodes, Finished.
Based on the CG collection by TORYA!/Otona teikoku (TORYA!/オトナテイコク). It was a hot summer. Out of work, the protagonist visited his family's house in the countryside. His ambitions were in tatters. He forewent a job hunt in favor of lazing around the house. That's how he got close with his brother's wife. Her name was Arisa. She was a stunningly beautiful Russian bride transplanted to Japan. Her interest in Japanese was strong, and she was refreshingly open and tender. It wasn't long before the bitter protagonist fantasized about stealing her. Around the same time, his brother went on a trip.
Synopsis via AniList (English).