 If you liked
Mushi-Uta
|
 ...then you might like
Kamisama Dolls
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Both anime involve characters who summon dolls/creatures to help them in battles. A character in both shows escapes from a place in which they were being held, which causes many people to pursue them. Also, in both shows, the events of the past influences the characters and their interactions with each other. They can both get dark and violent, but Kamisama Dolls, despite having comedic moments, is the darker of the two, and contains more action.