Board Thread:Questions and Answers/@comment-50.162.151.193-20151220183435/@comment-5290299-20151220221152

The answer is in my recent blog. But basically Baka Tsuki was hit with a DMCA and was asked to remove mondaiji from the sight. I don't know why just volumes 1-5 and some of the illustrations but I am going to assume they are waiting for magref to pick up his translations and then finish the deletion.