Magical☆Star Kanon 100%

After one of Kanon Nakagawa's concerts, Elsie discovers an audition searching for a young girl to play Kanon's little sister and rushes to the studio. The event takes a supernatural turn when a Runaway Spirit infiltrates the set and transforms Kanon into a child, leaving the idol unable to prove who she really is.

When the spirit begins targeting the auditioning girls, Kanon and Elsie realize that Kanon's singing can interfere with its power. Forced into the role of a real magical heroine rather than merely an idol playing one, Kanon turns her voice into a weapon to protect her young fans and recover her true form.