If you're looking for anime similar to Seikimatsu Occult Gakuin Specials, you might like these titles.
A first-year high school student who struggles to make friends despite his efforts to please others. His life takes an unexpected turn when one summer day, he meets Tsumugi, an oni (demon) girl on a quest to find her mother in the human world. Snow mysteriously begins to fall… and their adventure begins.
Yanagi Yukito is an orphan who one day encounters an eccentric disciple of his father's. The strange man takes him to his birthplace on Ayakajima, made up of seven islands where mysterious beings called "Mitama" and dragons are rumored to reside. There, Yukito meets his father's two other disciples, who protect the harmony of Ayakajima... which soon threatens to collapse.
In ancient Japan, the great god Susanoo rose from the underworld to defeat the treacherous dragons plaguing mankind; but in his attempt to free the world of the serpents, he was banished - only to be reborn in Koichi Susa. This boy Koichi, a descendent of the keeper of the Shrine of the Eight-Headed Dragon, runs from his destiny as he struggles with his fears. With dragons arising around Japan, Koichi attempts to rise above his despair and protect his childhood friend Tarumi, only to find another challenge waiting for him...
Tomoya cannot live the life he envisioned for himself. Aoi cannot find her place in the world. Ryou has his once shining future suddenly pulled away. Each has their own reason for needing to meet the summer ghost. On a summer night when life and death cross paths, where will each of their emotions take them?
Papa, Mama, and Sue are juice-drinking vampires from the monster world – but there’s a problem! They’ve been kicked out for not being scary! The human world offers similar challenges, as Papa is still unable to scare 1000 humans – the price of being able to return to the monster world. Papa’s inventions never seem to work and Sue has unfortunately become enamored with a human boy named Kou; with these roadblocks and more in their way, will the Vampiyan family ever earn their way home?