Yeri Na

Cute, older manga (2004) about a typical teenage girl at odds with her twin brother and various family struggles: her mom's on the road for work, her dad is having a hard time at his own job, her much younger brother depends on her for everything, and her mangaka (comic artist) older sister often needs her help to meet deadlines. Not to mention she thinks her brother's friend is really cute.

This book stood out to me because I don't normally encounter large Japanese families (four kids!).