Chitose Sakuraba is the main character of the story. She is an elementary school girl, described as being eleven years old and born on May 5th. Her fundamental motivation is her enthusiastic and one-sided romantic crush on Hiroshi Kashiwabara, a young man who works at the town hall. This infatuation began after an incident where Hiroshi allegedly rescued her. Throughout the series, her primary goal is to get closer to Hiroshi, whom she affectionately refers to as her onii-chan, and to declare her feelings for him.

In terms of personality, Chitose is depicted as incredibly energetic, ditzy, and persistent. Her approach to pursuing Hiroshi is straightforward and unrestrained, often leading her to invade the town hall where he works, despite the obstacles in her path. She possesses remarkable physical abilities for her age, being described as incredibly strong and athletic, which aids her in her enthusiastic pursuits.

Chitose navigates her daily life with a small circle of friends, including Misaki and Hinako. Her most notable rival is her own homeroom teacher, Asako Fuji, whom she views as a competitor for Hiroshi's affection. This dynamic creates a significant source of conflict and comedy, as the teacher often finds herself drawn into childish squabbles with her student. Despite their rivalry, Fuji-sensei remains an authority figure who frequently punishes Chitose for her mischievous behavior. Her relationship with Hiroshi is almost entirely one-sided, as he is the target of her affection, though his own perspective is not a central focus of the narrative.

There is no available information about any significant character development or a detailed list of other notable abilities beyond her physical strength and athleticism.