my memory of it is vauge so sorry if this description is pretty shit :s
this man finds a way into a demon world. i think the scene where he finds it envolves a cutish demon creature that is dieing because its in the 'human' world and he helps it back into the demon one.
the only other definitive point i can remember is a characteur with a blue cresent moon shaped head that is one of the 'good' guys and is helping the man.
i think there also an evil demon characteur thats red.
ugh-dunno if thats enough for anyone to go on. i know its a long shot but does anyone know what im talking about?
thanks for any help ^_^