Hayate the Combat Butler Vol. 19 (manga)

It's the moment fans have been waiting for: Hayate and Maria, alone in the mansion! Will the world's most spectacular butler and maid, respectively, doff their prim-and-proper manners and get busy at last? Probably not, but that doesn't mean Hayate's other love interests can rest easy. When Nagi fears that her "romance" with Hayate is growing stale, she vows to kick the relationship into high gear. Either her secret love techniques will work wonders, or Hayate will wind up cross-dressing again, so it's a win-win situation for the readers...