Natsuki has a very close relationship with her friend Sako, having built a strong bond of trust over more than ten years. She always confided in Sako and sought her advice whenever she had problems. One particularly memorable moment was Sako's support during her first sexual experience. Anticipating intimacy with her boyfriend, Natsuki asked Sako to help her practice beforehand. Sako carefully taught her everything—from putting on condoms and performing blowjobs to the gestures and sounds that turn men on. As a result, both Natsuki and her boyfriend had a satisfying experience, but a slight discomfort lingered within her. She felt that because Sako had taught her everything, her lovemaking no longer felt like her own, but rather as if it belonged to both Sako and her boyfriend. Natsuki began wanting to develop her own unique style to truly please her boyfriend. To achieve this, she bought a dildo and started practicing various techniques—how to lick, stroke, and thrust. Eager to test the results of her hard work, she approached her next encounter with her boyfriend full of hope. However, his reaction afterward was cold, leaving Natsuki anxious and wondering if he had started to dislike her. When she shared this with Sako, she simply replied, "You just need to do exactly as I say," making Natsuki realize just how dependent she had become on her friend. From that point on, she resolved to improve her sexual skills through her own efforts. Her decision to participate in this adult video was driven by a desire to gain more experience and prove herself. There's also a part of her that wants to show up both her boyfriend and Sako. Enjoy the fruits of Natsuki's determination and witness her most intimate, uninhibited moments.