Currently you are able to watch "Hells" streaming on Crunchyroll Amazon Channel, Screambox, History Vault, Viewster Amazon Channel, Screambox Amazon Channel or for free with ads on Peacock, Peacock Premium, The Roku Channel, VUDU Free, Tubi TV, Pluto TV, Retrocrush, AsianCrush, Freevee, Cineverse. It is also possible to rent "Hells" on Amazon Video online and to download it on Amazon Video.
Amagane Rinne had an accident and died while hurrying to school. She suddenly arrived in an awkward school... in Hell, filled with demons. While she is struggling and wishing to go back to the world whence she came from, she makes friends with her demon schoolmates and develops an uncommon bond.