義理の弟の部屋に入ると、彼は自慰行為をしていて、私は興奮して、私たちは激しくファックしてしまいました。

Being bored on the couch in my house, I went up to my stepbrother's room to see what he was doing and when I opened the door I found him masturbating, he made me curious and I started to get excited and together we ended up fucking very hard, until I made him take out his milk.