MEYD-849 JULIA's polygamous sex life ~ My wife has another husband, and his job is to handle the sex ~

In the year 20××, Japan recognized and adopted the 'one wife, multiple husbands' system. The main clause is... one wife can have up to two husbands. However, sexual intercourse is to be performed by only one husband as a principle. Kaoru loves his wife Julia, but sex is handled by another husband, Tooru. Right after Kaoru and Julia shared words of love, sexual intercourse unfolds before Kaoru's eyes. The increasingly twisted life of two husbands and one wife eventually starts to go awry...