"I'm having sex with Takeru..."Eri returned to the countryside where she was born and raised during her college summer vacation. When she arrived in her hometown, her sister Yoriko and her old friend Takeru came to pick her up.Eri was happy to see Takeru for the first time in a long time, but she realized how close her sister and him had become. They don't seem to be going out, but it still made her jealous. That night, however, while she was lying in her futon, thinking about what she was going to do over summer when she suddenly heard Takeru's voice.She thought to herself "what are you doing this late at night," but then he suddenly embraced her, causing her to be so surprised she couldn't speak. Takeru seemed to be drunk, but Eri, ecstatic about his actions, lets him continue. He then begins to lick her breasts and rub her nipples. Then his hand quickly moved down to tease her sensitive spots...! Soon after, Takeru states that "It's fine, right?" and screwed her silly!