Surveyors Heyawake, also known as my favorite original genre (as of the time of post). Medium, a little bit toward hard.
Apparently it’s not a small-grid puzzles batch!
Who says I can’t commemorate my 25th puzzle with something special? Antisymmetry, if you look closer (opposite givens add up to 5). The regions somewhat form a windmill, although that is not really intended. Weird regions, but I believe I don’t need to instate the “white contiguous region may not span over two boundaries” rule because it’s equivalent.
So… I’m running low on ideas. The first three people who e-mail me the correct solution to this puzzle may pick a genre, to be posted before Puzzle 40.