Mirrored Heart is the ending theme of Senki Zesshou Symphogear M, sung by Yukine Chris' voice actress, Takagaki Ayahi.
Sequence
A large mirror smashes into shards and falls apart starting the song. With silhouettes of Hibiki, Chris and Tsubasa in the middle standing with reflections of them below with their eyes closed.
Next, many shards fly to the left showing silhouettes of Shirabe and Kirika with their reflections to the left, then shards to the right with white silhouette of Maria with her reflection vise versa. The a broken mirror with a reflection of Kiseki and Haruna, with their silhouettes facing the other way and finally, floating silhouettes of Prelati and Cagliostro.
Then when the song comes to an end, the image of a broken mirror is shown with all 10 Symphogear Users seen in a piece of the mirror's glass.