This anime series, which is currently three seasons in length, is centred on Jashin-chan; a snake-tailed demon who was summoned to Earth by would be witch Yurine Hanazono. Unfortunately for her Yurine doesn't know how to send her back to Hell. Jashin-chan determines to kill her, the only other way for her to get back to Hell. That proves more difficult than they expected. Yurine seems to attract supernatural beings; soon various friends of Jashin-chan appear along with a trio of angels who have, separately, lost their halos and become trapped on Earth. There isn't too much of a plot to speak of but plenty of amusing events occur in every episode.
I came across this series when the third season started on Crunchyroll; at the time I didn't realise it wasn't new. The first episode of that season made it obvious that there were previous seasons so I immediately started watching from the proper beginning and quickly caught up to the new episodes. I really enjoyed it; the characters are a lot of fun. Jashin-chan may be entirely self-centred but she is a lot of fun to watch as her various plans fail. The other characters are great to; all of them getting a little time to shine; I particularly liked Pekola, a poor angel who lives like a homeless person and is frequently hungry. There are plenty of running gags that are quite fun. Overall a fun series; I hope we get more seasons.
These comments are based on watching the series in Japanese with English subtitles.