Voiced by: Shizuka Ito

Age: 15, and turns 16 with the development of the series.
Height: 161cm
Weight: 45kg
Blood type: O
Hair: Pink
Eyes: Green
Birthday: March 03

Hinagiku Katsura is the current student council president, and kendo club president at Hakuo Academy, the school that Nagi, Isumi, and eventually Hayate attends. She is fifteen and is an expert with swords, specifically kendo . She first meets Hayate when he gets lost on the huge Hakuo campus and ends up rescuing her. She had been helping a baby bird who had fallen out of its nest, but due to her fear of heights , had become stuck without her realizing it. Hayate ends up helping her down the tree, and then promises that he will come help her should she ever call for him. In gratitude, she invites him to the top of the clocktower, where only student council elites are allowed. She allows Hayate to call her by her first name and also seems to be infatuated by Hayate and his attractive personality. Her family does not show any signs of being rich. However, in Volumes 9 and 10, it is revealed that Hinagiku suffers from a past nearly identical to that of Hayate's - she, along with her sister, had also been abandoned by their biological parents who left them with a debt of 80 million yen (approximately $660,000 US) shortly before Hinagiku's sixth birthday. Following this, her sister, Yukiji, managed to pay off the debt (albeit through what the manga depicts as rather dubious means) and the two of them went to live with the Katsura family, as Mr. Katsura had been Yukiji's elementary school teacher. When Hinagiku finally sees the beautiful view from atop the clocktower on the night of her sixteenth birthday with Hayate's help, though, she finally realizes that she actually loves him. She had been afraid of admitting this to herself because she thought that he would have abandoned her like her parents did if she fell in love with him. She likens her feelings to the scenery atop the clocktower: she had been unable to see them because she had been too scared to. When Hayate asks her if she's still scared, she replies that while she is, it's not a bad feeling, which is a possible response to both her fear of heights as well as her fear of abandonment. Hinagiku's problems are not over yet, however; in Volume 8, when Nishizawa and Hayate were staying over at Hinagiku's house, she promised Nishizawa that she would support her in her relationship with Hayate. Now having fallen in love with Hayate herself, she must come to terms with her feelings of betrayal as she tries to find a way to tell Nishizawa about her feelings. In addition, Hayate himself doesn't seem to think that Hinagiku could have feelings for him, although Nagi seems convinced otherwise. Hinagaku is sometimes referred to as being rather masculine for a girl by other characters in the series. This is exemplified on Valentines Day in Volume 7, where Hinagaku is given a lot of chocolates by female admirers. Miki suggests this is because Hinagaku is seen as being "cooler" than the boys, and the fact that she was rather domineering at a younger age. Her athleticism, competitiveness, and leadership position all also probably contribute to this view. This is similar to how Hayate is seen as being rather feminine, and wound up giving chocolates to girls on Valentines Day when it was supposed to be the other way around. In most of the colored scenes as well as covers of the manga, she is depicted with pink hair; however, on the color page cover of chapter thirty-seven she has strawberry orange hair. The anime has given her pink hair, which seems to correspond with the fact that the sole exception to her hair being pink is on the previously mentioned color page cover. The hairband she is always seen wearing was a birthday present from her real parents.