I wonder what would happen if Hinagiku later confessed to Hayate. She still has not done a direct confession yet. Now that Hayate has no more excuses about owing someone 150 million, I wonder what would be the reply?
On a side note, I expect that after in the coming chapters there is bound to be a lot of relationship drama with the girls interested in Hayate (Athena, Ayumu, Nagi, etc) even though the main plot would be the palace opening.