Apparently the non-BL remake of a series of BL (probably shota?) doujinshi. A man who claims to be a wizard takes in a neglected boy as his student. After the first volume, there are many questions left unanswered, but I really liked this. I'm also somewhat curious about the original story, although the possible shota turns me off (it seems that Haruki is older in the original, though probably still younger than I'd be comfortable with). But anyway, this is a good manga - as expected by Kusama Sakae.