The Best Older Sister

There's always so much fuss over baby Kiju that Sunhi suspects her family doesn't have any interest in her anymore.  Kiju is a sweet baby, but Sunhi can't help being jealous.  Her grandmother understands just how Sunhi feels, and soon she and Sunhi have worked out a way to make Kiju's first birthday a party for everyone--especially Kiju's "best older sister!"