After Nanako Tsukishima and Sora Shiina made their lesbian debut, they were formed into an exclusive lesbian unit called "Vivians." In this work, director Minato Makoto devises a cruel scheme to test whether their love is truly genuine: having each girl have sex with an AV actress in front of her real-life partner. This marks the first-ever NTR documentary featuring a real-life lesbian couple. What will become of Nanako and Sora's relationship? Can their love overcome the greatest challenge they've faced in their romantic lives? The answer lies here.