This was lovely. The pacing was perfect and the romantic bits were just sappy enough for my tastes. :P
Out of all the residents of the Scarlet Devil Mansion, this pairing has to be my favorite, though Patchy x Koakuma is a close second.
(I really hate to nitpick, since the scanlators do this for us expecting nothing in return, but the dialogue could have used another proofreading check. Even so, thank you very much to Natsurei scans for bringing us this doujin. I enjoyed it immensely!)