SUPER POWER

3
R

Umi no Yami, Tsuki no Kage

Ruka and Rumi Kobayakawa are twin sisters in love with the same man, athletic upperclassman Katsuyuki Touma. Rumi seems supportive of Ruka's fledgling romance with Katsuyuki, until the twins are infected with a strange bacterium that transforms Rumi's personality and gifts the twins with terrifying psychic powers. Now Rumi will stop at nothing - or no one, that gets between her and Katsuyuki, including her own twin sister... (Source: ANN)
Ova Winter 1989 5.86
1
PG-13

Boku no Hero Academia: Training of the Dead

Returning from their internships, the students of Class 1-A are immediately thrown into more training by their homeroom teacher, Shouta Aizawa. For this exercise, the class will be joining four students from Isamu Academy High School to compete in a survival game. Split up into groups of four, students must either eliminate each other or stay hidden until time runs out to win. The training also acts as a reunion between Tsuyu Asui and her friend from middle school, Habuko Mongoose. However, not all the students from Isamu are friendly—Katsuki Bakugou almost instantly picks a fight with Romero Fujimi. The conflict between the two leads Romero to angrily release his Quirk, a gas which zombifies anyone it comes in contact with. How will the remaining students deal with the situation after most of the people around them turn into zombies?
Ova Winter 2017 7.21
3
Rx

Ikkitousen: Western Wolves

Finally, the Kanto fighters gathered at their destination, Yamato Gakuin. There, the Kansai fighters who were wearing a strange spirit due to Himiko's curse were waiting. Chouhi, who was in the middle of her training, senses that Ryuubi is in danger and decides to head to Yamato Gakuin. However, the Kanto fighters fall down one after another in front of Himiko, who draws out the power of the magatama. Kan'u and Ryuubi are cornered. At that moment, Chouhi's magatama shines brightly. Chouhi, wake up――!! (Source: Offical website)
Ova Winter 2019 6.33
1
R

Baoh Raihousha

An innocent young man, Ikuroo, has a parasite known as Baoh implanted in his brain by an evil organization, Doress. The parasite makes him nearly immortal and gives him the ability to transform into a really powerful beastie when he's in trouble. Doress intends to use him in some sort of ploy for financial success, world domination, or something along those lines, but when they're transporting him on a train, a young psychic girl, Sumire (who's being held by the organization due to her abilities), sets him free and the two escape together. Of course, Dr. Kasuminome is the mad scientist behind the whole Baoh thing, and he isn't about to let his test subject get away and he has considerable resources (including some superpowered lackeys, as well as a small army) at his disposal. (Source: AnimeDB)
Ova Winter 1989 6.13
R-17+
6
7.09
PG-13
4
5.26

Arcade Gamer Fubuki

Ova Winter 2002
G
6
5.57

Ultraman Graffiti

Ova Winter 1990
R+
3
6.42

Bakuretsu Hunters OVA

Ova Winter 1996
R-17+
1
5.97
PG-13
3
5.98
PG-13
1
6.93
R+
1
6.45

Midnight Eye: Gokuu

Ova Winter 1989
R+
1
3.15
R+
1
6.21

Midnight Eye: Gokuu II

Ova Winter 1989
R+
2
6.53
R+
5
5.91

Akai Kiba: Blue Sonnet

Ova Winter 1989
PG-13
2
5.24

Psychic Force

Ova Winter 1998
R-17+
12
6.47

Souryuuden

Ova Winter 1991
R+
6
6.97
PG-13
13
5.78

Magma Taishi

Ova Winter 1993
R+
2
5.91

Shin Hurricane Polymar

Ova Winter 1996
PG-13
1
7.66
R+
1
5.51