OBA-261 Aunt Mari Aoi, a relative who secretly seduces me

As a final refreshment before taking the exam, Kyosuke will go to Comiket (a manga spot sale) held in a rural area. When she happened to know that it was going to be held near her sister Mari's home, she asked Mari to stay for a week when Comiket was held. And on that day, Kyosuke was surprised every time he saw Mali. In fact, Mari was very similar to Kyosuke's favorite anime character, "Witch God Lady Romano." Then, Kyosuke, who hasn't been able to get rid of Mali for a long time ...