If the husband doesn't pamper his wife, let the neighbor come over and help

One day, “Miyu” accidentally caught his brother-in-law masturbating. At first I was very shy, but my inherent lust was ignited and I performed an erotic act with my brother-in-law. Not long after, the two finally entered an area that should not be entered. A comedy about two people who like to play with fire… My husband finally found out… Maybe?