In another universe there are angels and when they are bad they turn into horses and get sent to earth to be used by the horse girls. one horse is giving another chance to turn back, but the horse needs to cheer up a sad girl by the end of 4 months, if she is sad still he (the horse) dies forever and gets sent to hell but if he (the horse) cheers her up by then he will get to turn back to an angel
Tell me your opinion on the idea