Knowing it's a bad thing, yet still... unable to suppress the overflowing lust... taking advantage of her parents' absence, she and her beloved younger sister had their first unprotected sex until morning. AWAW-028

I know this is a bad thing... but it's okay. This is a record of my first unprotected sex with my brother while I was watching over the house until morning... My brother and I have a secret... I know this is something that absolutely cannot be found out by our parents! But... because I love my brother the most... I couldn't resist... having sex with my brother felt so good... I was so happy! Then, the long-awaited day when my parents weren't home!! Because I was so looking forward to it, after my parents left early in the morning... before they went to school, we immediately had sex in the kitchen where we were preparing breakfast...!! It was so great to be able to have sex openly at home...! As soon as school was over, I rushed home and licked my brother's penis! Because... I kept thinking about his penis during class... so I was so happy! Although we've always kept our sex a secret from our parents... my brother used to never allow unprotected sex... but today... today, my brother was unusually gentle... accepting everything about me... I could feel his penis directly... which felt so good, and he thrust in and out forcefully without any restraint... ejaculating a lot of semen inside me...! My first unprotected sex. Internal ejaculation sex. Another secret I can't tell anyone...hehe♪