Maria†Holic: Run Run Riru Ran Ran Rara  

Maria†Holic: Childrens Day Parody PV, 「るんるんりる　らんらんらら」小林ゆう初ＣＧアニメ化ＰＶ, Maria†Holic: Children's Day Parody PV

The Maria Holics official website put this video on its homepage on Childrens Day.