A decent Shoujo.
It basically this girl sent to the human world to fix problems and collect "healed hearts" to get her wish granted.
Her kindness and innocence will rub off you.
The way she gets hearts is simple and expected form the genre.Simple one- off sloutions where she sits down and talks sense into those she helps.
Every body in the show may seem too naive and innocient for their own good, but there is some meaninigful tension for the show.
The characters you should look out for is Fujimoto.A contrast for kobato and where most of the conflist comes from.Her toy pet buddy also serves to give most of the humor.
The most impressive aspect of the show is her song.Which allows to define her as a character.