Hinako

雛子

Hinako is the youngest of the 12 sisters, and like all of them, she wants to be around her big brother whenever possible. She enjoys playing various games, writing cute little letters and messages, and likes storybooks, particularly when Wataru reads them to her. When she goes off to search for a missing teddy bear, even after Wataru endlessly helps her look for it, she tells him, "If onii-tama is with me, I don't need anything else." This really shows that, despite her young age, her playfulness expresses how much she likes her older brother.
In her story in Sister Princess RePure, we really see how much she adores him in a fantasy sequence where she goes on a little adventure on a rainy day and meets a frog prince, but still continues on to eventually find the one that she likes most, her big brother.