The story is about a demon who arrives on his 200th birthday, which is the age for him to collect souls, and he collects the souls by killing people. The story is very poorly done and the objective is very bad, but had some funny moments. If you want to see something really good, this is not the right OVA for you to see. It's just funny in parts and that's it. If you like the OVA, I recommend you read the manga. It's not good either, but it's more complete and it also has some really funny scenes, furthermore, it's pretty quick to read.