Kanon, a younger sister who came to Tokyo to take her university entrance exam and lives with her brother who lives alone. Perhaps because she has an exam tomorrow, she falls asleep in her uniform, tired. When her brother returns from being away from his desk, he is captivated by the sight of his sister's panties, sleeping in a very defenseless outfit. As Kanon shows no signs of waking up, he gets even closer to look at her panties and smells her hair, gradually escalating until he takes out his penis and starts masturbating. As he masturbates, smelling Kanon's feet, Kanon wakes up and is surprised! "Big brother! What are you doing! We're brother and sister!" Her brother panics and apologizes. However, Kanon, who has always loved her brother, can't bring Ke'ai to hate him that much and feels sorry for him, so she extends a helping hand. "Big brother, you've been building up a lot, haven't you? That's why you were tempted. If you say you won't do it again, I'll help you this time. What should I do?" Then her brother suggests that she give him a footjob. He seems to like everything: the black stockings that Kanon was wearing, the panties through the stockings, the smell of the steamy stockings. Not knowing what to Kanon as he is told and gives him a stocking footjob, but his brother doesn't cum easily. Then he says he's about to cum... if she shows him her boobs. Next, he wants her to do it with her hands, then her mouth, and his demands gradually escalate. But his brother still can't cum. Then Kanon suggests, "We're brother and sister, so we can't put it in, but it's okay if you just rub it. Then you can cum." She takes off her panties herself, straddles her brother, grinds her hips, and rubs their genitals against each other. Kanon seems to have felt it involuntarily, and she desperately tries to suppress her voice out of embarrassment. But there's nothing she can do about the pussy juice overflowing from her pussy. Her movements gradually become more intense, and she slides in raw! But they're both feeling good and they can't stop. The brother cums inside his sister.