After watching this work depicting the hot spring trip between son Hiroaki and mother Sayoko, the actress playing Sayoko truly embodies the essence of mature female eroticism. Her fair and soft body reacts intensely to every touch, sparking excitement, especially in scenes involving tongue techniques, kissing, and fellatio, which are irresistibly sensual. With a good figure and large buttocks enhancing the erotic appeal, she is the epitome of a seductive woman.

However, the story's development feels somewhat lacking. Despite the setting including an open-air bath, many scenes repeat intimate acts in the room, missing opportunities for diverse situations that viewers might expect. For instance, bold interactions in the open-air bath or scenarios where the son takes the initiative could have added more drama and heightened excitement. As it stands, the atmosphere leans more towards a mature woman's affair trip rather than mother-son incest, and the long runtime lacks variety, which is a pity.

In terms of acting, Sayoko's moans sometimes come across as exaggerated, detracting from naturalness. Still, her beauty stands out, and her updo hairstyle resembles a certain celebrity, blending approachability with sex appeal. The intense and deliberate interactions are commendable, particularly the maternal aura that exudes eroticism. Overall, the work relies on the actress's charm, but with more creative scripting, it has the potential to reach greater heights.