Is this a joke title? sakura has no kiwa I can discern. The older Uesakura* sister needs to be trained to help. IT's an unhealthy environment for Sakura and Futako, and for Ichiko too, who seems to be modelling herself on Tamako-chan. The unfairness is bothersome, though it's clearly a theme. At least Sakura and Futako can take turns spoiling each other.
*Upper Sakura vs poor, I assume, lower Sakura.