BKD-211 - Alone on a hot spring trip, defiling my mother to celebrate my graduation

The actress is great, but the quality is so low I can't believe it's part of the mother-son incest series. Is it the director? The male actor? Or the script? It fails to capture the guilt and immorality that the series is known for, devolving into just another AV about a mature woman and a young man having sex on a trip. The post-coital dialogue is also subpar. The first conversation in the hot spring after crossing the line from mother-son to lovers is crucial, yet they barely speak before kissing. The series used to be good because of its detailed direction and solid scripts. I'm disappointed because my expectations were high. It's a dud. Mio Morishita is a wasted asset. This is a perfect example of what happens when you can't cook (direct/write) to suit your ingredients.