Chiyoko Kurotori (Choco) is a 5th-grade student who loves the Occult. One day, she made a huge mistake with a love fortune-telling requested by a friend! Surprisingly, she summoned the black witch, Gyubid! Because of that, Choco ended up having to undergo black witch training!? Can Choco solve the Troubles arising at school with black magic――!? The long-awaited Comicalize of the big Hit work finally Starts!