Уменоморі Чісе

The heiress of the Umenomori family and one of the main heroines. She has the appearance of an elementary school girl, but is actually a high schooler the same age as Fumino and Takumi. She looks upon Takumi as her servant and has a strange want for him to let her hold his hand. She has a clash of personalities with Fumino, and the two girls end up bickering whenever they are within the vicinity of each other. Takumi usually has to intervene and end any disagreement the two might have. She decides to make a club, but also forcefully ropes in Takumi and his friends as members.

She did this because she's incredibly lonely, since her parents are never around, normally busy at work, to the point where she pretty much lives without feeling the warmth of a family. Therefore by forming the club and buying every cake at the Stray Cats, Takumi and his friends can attend the club and keep her company, or so she thinks. Takumi later refuses to sell her any cakes, telling her that it is meaningless to sell cakes like that, and persuades her to try her hand at making a cake, so that she would understand why. Chise does and makes a passable attempt at baking a cake, and she decides to start working at the Stray Cats so as to make sure that Takumi and his friends can join her club.