Hayate no Gotoku! - episode 33 - 10 Nov, 2007

It's Hakuou Academy's culture festival time and Hayate is kept busy by the students and teachers. Then the Hakuou Three Amiga persuades Hayate to work at a cosplay café. Nagi searches for him, but she is unable to find him. The cosplay cafe turns out to be the butler cafe and the trio made Hayate work again as they are playing cards. As Hayate and the trio switch places for work, Yukiji appeared out of nowhere and dragged Hayate out of the cafe. Nagi starts crying because of Hayate, as she wanted to go walking with him really badly. Hayate was surrounded by the crowd with their paperwork, as Yukiji made him work for her. Hinagiku helps relieve Hayate from frustration. A mysterious dark butler, Puppet Butler, tricks Nagi and hypnotizes her. In her hypnotic state, she finds Hayate and leads him to Puppet Butler at the school's old building where he challenges Hayate and Hinagiku. Even after the battle, Nagi is still under hypnosis the moment after she said that she hates cultural festivals. Nagi then said to them that she will teach them the "true culture" of Japan, by selling all her manga along with Superintendent Kirika. (Source: Wikipedia)