Siblings compete in a baseball fist showdown for a big prize! Older sister: Mana, 23 years old (shop clerk) Younger brother: Masashi, 22 years old (virgin) ``Well, I think it's okay. We're family, after all.'' ``I don't think I'll get an erection 100%.'' Both of us have become adults in mind and body. Now, I'm trying to plan a project without knowing that that logic doesn't work. I could have predicted it a little, but I'm going to take back what I said before lol. My younger brother's cock is getting erect lol Well, it can't be helped since he's a virgin, but he's completely in heat now. What's even more surprising is that the older sister is embarrassed by that big dick but gets excited after that. After that, it develops into so-called naughty incestuous sex. I'm glad that the relationship between the siblings has deepened after they graduated from virginity! That's what I'd like to say, but I'm worried about their future family relationships. At first it was intended to be a baraty, but from now on I'm going to follow this sister and brother as a documentary lol