Since the tender age of nine, Hayate Ayasaki has busted his behind at various part-time jobs to support his degenerate gambler parents. And how do they repay their son's selfless generosity? By selling his organs to the yakuza to cover their debts! But fate throws Hayate a bone...sort of.
Nagi has done the one thing no one ever expected from the pampered heiress: gotten a job! But her first-ever day of work leaves her too exhausted to enjoy Sakuya's birthday party, an Osaka-style comedy spectacular where the birthday girl's friends are forced to perform before a massive audience. After a comedy buildup spanning several chapters and this cover blurb, can Hayate make 'em laugh?
This is a volume of revalations and surprise information! Hayate gets to meet some of Sakuya's quite interesting family (you can see where she gets it from), Hinagiku braves her fear of heights in her quest to confess something vital, and Azumamiya, the coward from many books ago, finds himself without his dependable butler and seeks a replacement in Hayate.
I think, aside from the inclusion of the pervert butler, my favorite part of this book was the mountain hike in which Azumamiya tries to function without his butler. It's funny because he wants to take the easy way out and just replace the guy for a while with someone equally competent, but you can see as the event goes on that in his own way, he's trying to be stronger and more independent. He just doesn't have a worldview that really lends itself to that sort of thing.
It sort of matches with Nagi, in a way, even though she really scorns this kid. She is also struggling with some of who she wants to be and relies on Hayate for a lot of things. And it's likewise cute to see her still trying hard when he's not around.
That being said, the bit with Hinagiku is sort of hilarious just for disappointing her expectations in a good way (even though it's pretty clear to the reader what's going to happen).