Maria†Holic: Runrun Riru Ranran Rara
Japanese title: 「るんるんりる　らんらんらら」小林ゆう初ＣＧアニメ化ＰＶ
Type: PV
Episodes: 1
Source: Manga
Genres: Comedy
Studios: Shaft
Producers: Media Factory
Duration: 1 min
Rating: PG - Children

The Maria Holic's official website put this video on its homepage on Children's Day.