My older sister, a gloomy girl, made her college debut... She's also got her first boyfriend, so she's excited. However, she's never had any romantic experience, so she's worried about her first time having sex... She asked me, her younger brother, to teach her how to put on a condom!! She said she had no one else to ask, so I asked her... But she said that! I went along with it and taught her how to use a condom, and we ended up having sex with a condom! Now that my older sister has awakened to sex, she's Kokoro and wants to know the pleasure of raw sex...