A big brother is thrilled to be entrusted with walking his little sister home from the school bus for the first time. He takes his responsibilities very seriously but his little sister is quite a handful. She sings an annoying song over and over, she picks up trash, and she chases a big dog but hides from squirrels. Her older brother is able to meet each challenge with age-appropriate responses, clearly mimicking what he has observed his parents do. When they get caught in a sudden downpour and the little sister trips and falls, big brother is there to console her, move her along, and assure her she is very brave. Appealing illustrations with minimal embellishment focus on the siblings, who are Asian, rather than the setting, while also telling much of the story, especially by showing the little sister’s antics and her big brother’s reactions to them. (Ages 3–6)