Incestuous sex with her cousin without cover

One day my sister Eri Saeki came to our house, the same day my wife was away, but because we loved each other, we talked until late at night without realizing it. Because it was dark, I didn't let her go home. alone, so I invited her to stay the night. Seeing that the road was far and quite dangerous, my sister stayed and went to my wife's room to sleep. She wore my wife's pajamas, which made me miss my wife again. , that image made me feel that my wife was more beautiful because my sister had such a great body and then I fell into incest.