SDMF-050 Itsuka is a tomboyish schoolgirl who is very close to her brother. One day, she witnesses her brother’s morning erection, and she gets taken aback, fascinated by a cock that she perhaps desires to have?
From that day on, she begins to take the initiative to have sex with her brother and his magic cock at any given chance.
With the parents always close by, this becomes extremely risky, but she always finds ways to conceal her dirty deeds from her brother.