Aru Inari, who lives at home, was looking forward to a trip to Hawaii with her family, but it was suddenly canceled due to her father's work. She regretted it because she bought her a new bathing suit and started her life in a bikini at her home. Her brother is annoyed by her sister in a bikini and she can't stop erecting! She finally can't stand it anymore and ends up doing her forbidden incest ●.
