Short History
__Hell teacher Nube or Jigoku sensei Nube is a manga written by Shou Makura ilustrated by Takeshi Okano . The manga runned in WSJ in 1993 until 1999 , The anime adaptation aired on 1996 and it finished on 1997 .
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The Story
__The main plot in the anime and the manga is The teacher , Meisuke Nueno (Nube) , who protects is students from the evil spirits , yokai , etc . After the students are saved by Nube they learn about they mistakes which can help them to evolve in a better person .
The plot isn't so special after all , i think by now you watched some good anime about teachers who protects their students but Hell Teacher Nube is special in some ways so let's continue .
The story is most likely episodic , they are some points when the story clearly evolves like when some characters are introduced : Kyousuke Tamamo , Yukime , Izuna Hazuki , Minako-sensei , Mami Kuroi ( doesn't appear in anime) , Zekki (only in ova and manga ) and Minki ( only in manga )
I think that is the best way to preserve a story with some episodic chapters/ episodes for building the world , when our characters can really evolves day by day and when you realize that everyone change in some ways or not :)) .
From my point of view this is a great interesting point of view this anime when it comes to story ( almost every characters have they arcs in the manga and in the anime )
About fillers some chapter in the anime are mixed up chronigically but this isn't an problem especially when the anime is episodic , and some chapters are a little changed bc they in the manga are before an important arc (Yukime's Arc) and in the manga are after Yukime's Arc but yeah is a good adaptation of the manga .__
The Animation
__Is really not the greatest , I mean for 90s anime the animation is good/ok . They did a pretty good job when it comes adaptating the horror elements from the manga . 
The animation is pretty solid some times and sometimes is just ok
The Characters
__Finally i can start writting about the characters .
First they are some cateogories for characters : students , Yokai , Teachers and the others person
the students - the Most importants students whho appeared the most in the anime and the manga are ; (Hiroshi Tateno , Kyouko Inaba , Miki Hosokawa , Katsuya Kimura and Makoto Kurita ) the other students are important as well but not in the same manner like that i mentioned , The students of Nube in some chapters/episodes caused some bad events which Nube appeared and protected them from the evil spirits after that they learned their lesson ,
Theacers - Meisuke Nueno , Ritsuko Takahashi , Kyousuke Tamamo ( he is a Yokai btw not really a spoiler ) , Ootsuki-sensei , Minako-sensei and Mami Kuroi
Meisuke Nueno is the protagonist of the story he is pretty straight forward person like he is not really the one character that has hides some card even for the watchers ( i mean from us who readed or watched the anime ) More likely he is just a normal exorcist teacher who really loves his job and likes some spirits . He sure has some ways to make an entrance . I really like his attitude in some situation and i kinda hope that i can be in some ways like him .
Ritsuko Takahashi is for the first part of the Hell teacher Nube one of Nube love interest , She can have some evolution in some arcs after she learns about Meisuke true Nature and not the nature of the Nube who just loves scary story
Minako-sensei is a very important character for Nube evolution in the person who is today , because she is the reason that Meisuke Nueno is a teacher in the first place , also she has a very good role in some arc and the character is lovely .
The Yokai - Kyousuke Tamamo , Yukime , Zashiki-warashi , Zenkki , Minki , Bakki , etc
They are a tons of Yokai in this anime and the manga , most of them are episodic antagonistic , some of them are literally good yokai just like Zashiki-warashi , some of them are antagonistic that did have a change of heart like ( Kyousuke Tamamo , Zenkki , Bakki )
Kyousuke tamamo - is a kitsune who is disguise in human form . Initially he was a villain who wanted to make the perfect transformation but he losed to Nube and after that he stops his evil action and starts experiecing about human and eventually learns about them and becomes more human . Imo the evolution of Kyousuke Tamamo is really one of the best especially his episodes are really great
Yukime is the other love interest of Nube , She is an Yuki-onna ( her story with nube starts before the initial story begins but yeah i am not going to explain all of that ) . I really like her character plus she is a good combo with Nube which is greatly seen in some episodes and chapters
the others person - Mugenkai Jikū and Izuna Hazuki etc
They are exorcist like Nube and Minako-sensei , but they are kinda creedy for money ( i hope i writed good ) they have really some good moments when they are introduces and how they evolves after some chapters , especially Mugenkai jiku who does not appear in anime does only appear in live action and in the manga and his time screen is short but on point and greatly exposed .__The Audio
The voice of the Characters are really good and lovely , the Opening and the endings are great especially ending 2 which is one of the favorite .
The Enjoyment
I really loved to watch the anime and to read the manga , I anticipated to like because i was interested in the series for some years but i didn't expect to like so much this series , Ibinged this series and really cried in some moments , i really loved the road of this story .
Overall
__This anime and the manga are in favorites for some times now because it greatly changed my mind and help me to realise something (not telling i don't want to spill the beans) , i writed this review in hope some anime fans wants to watch this anime .
I recommend this anime and the manga for the people who loves to watch some good retro anime , for the people who enjoyed watching assassination classroom , Great teacher onizuka , for the people who are interested in japanase forklore and for the people who just want to watch this . The anime is pretty family friendly for the begginers in the anime but is great for those who are veterans at well ,__