Dokidoki Majo Shinpan! Duo  

Heart-Pounding Magical Investigation 2, どきどき魔女神判！2〈Duo〉

The two witches, Nishimura Akuji and Angel Ruru, employ the use of a ritual called "Witch Judgment" in order to locate and apprehend a group of schoolgirls who are concealing their true identities.

Dokidoki Majo Shinpan! Duo is an adaptation of Nintendo DSs game of the same title.