Yotsuba&! manga volume 10 features story and art by Kiyohiko Azuma.

Yotsuba loooooves playing games! When Daddy's the counter in hide-and-seek, he can never find Yotsuba, 'cos I'm such a good hider! And when we go to the park, Yotsuba's the bestest at swing-tag-shoe-races. Daddy says Yotsuba's making up the rules as we go along, but Yotsuba thinks Daddy's just a sour loser. But maybe Yotsuba will let him win once in a while.