OBA-261 My relative Aunt Mari secretly seduces me Mari Aoi

As a final refreshment before taking the exam, Kyosuke decides to go to a Comiket (manga sale event) held in a local area. - Coincidentally, my mother found out that the event was being held near my mother's older sister Mari's home, so she asked Mari to let her stay for the week it was being held. - And on that day, Kyosuke is surprised every time he sees Mari. - In fact, Mari bears a striking resemblance to Kyosuke's favorite anime character, the Witch God Lady Romano. - Also, Kyosuke can't get Mari out of his mind...