alucard_backwards

Sayonara Zetsubou Sensei is a slice-of-life "comedy":https://ani.me/anime/comedy featuring a high school teacher, Itoshiki Nozomu.

A ninja-for-hire is forced into fighting an old nemesis who is bent on overthrowing the Japanese government. His nemesis is also the leader of a group of demons each with superhuman powers.

According to legend, a demon is imprisoned inside the Masaki Shrine in Kurashiki, Japan. When Tenchi Masaki, a student at the local high school and grandson to the shrine master, accidentaly breaks the "seal", he discovers that it is not just a legend!

Hellsing, a secret organization within the British government, has long been battling supernatural threats to keep people safe from creatures of the night. They have a secret weapon in the form of an incredibly powerful vampire Alucard.

The human race lies in ashes. The survivors live like rats underground.

The world as we know it was suddenly altered forever when the door for the dimension of the gods and the door of the dimension of the demons suddenly opened up. Ten years later, a boy named Tsuchimi Rin was entrusted with two princesses from those dimensions.

Gon is a young boy who wants to be a Hunter. There are various types of Hunters in his world, and being a Hunter gives one certain privileges.