Animated Sex -Nee, Chanto Shiyouyo! 2

The Hiiragi family took in Kuuya after his parents' deaths and raised him as their own. When there were six older sisters, there was only one man. After a while, he developed feelings for his sister Kaname, but their father became concerned about what this might lead to, so he had Kuuya sent to live with his extended family. As a result, Kuuya has made plans to come home and see his sisters, who are overjoyed to see him again, at least for the most part.