Sumata Play Mishap!! Sister Couldn't Hold Back During Sex Lesson and Slid In!! 5

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Big sister goes wild during sumata play!! ■ After returning home for the first time in a while, the sister borrows her brother's T‑shirt and carelessly changes, causing an involuntary erection. The sister, with a bit of an S streak, notices and says 'your lower half is honest, lol' and it's sumata play!! ■ The sister comes to the brother's room to borrow a book. Wearing revealing loungewear that shows a lot, he gets an involuntary erection. 'You've been sneaking glances this whole time, what gives lol,' she says, and what starts as sumata play turns into raw insertion!! ■ The brother, whose sex life with his girlfriend isn't going well, asks his sister for advice. The caring sister gives hands‑on sex lessons, but they both get turned on. 'I'd like to practice other positions too, is that okay?' the brother asks. 'You have to handle the stimulation when the girl moves,' she says, and a strict riding‑position (cowgirl) lesson begins!!