The series is about a high school boy that somehow ends up becoming the basketball coach for five young elementary school girls.
Is it just me, or does the PV seem to exaggerate the size of the basketballs to make the girls seem even smaller...? :3
To promote the show, the main voice actors all acted out a live-action skit, and made a music video. (See spoiler)
The list of seiyuu includes Kana Hanazawa, Yuka Iguchi, Youko Hikasa, Rina Hidaka, and Yui Ogura.