OVA Anime
Ariel
Those incompetent aliens are still plotting to conquer the Earth! The only obstacle in their path is the giant, feminine robot ARIEL! But the young pilots have lives of their own... When Kazumi receives a mysterious love letter from a secret admirer, should she cancel her first date just to save the Earth?
(Source: AnimeNfo)
Tottoko Hamtarou Anime Dechu!
Tottoko Hamutaro Anime Dechu! is a direct-to-VHS OVA released on September 15, 1999. This was the first attempt at an animated adaptation of Hamtaro, and consists of four short episodes.The VHS was only released as a mail-order from the September 1999 issue of Shogakukan, and given away for free to Shogakukan staff with preschool children.
(Source: Hamtaro Wikia)
Tottoko Hamtaro OVA 3: Hamuchanzu to Niji no Kuni no Oujisama - Sekai de Ichiban no Takaramono
Shounen to Sakura
In postwar Tokyo, while his mum works, Taichi spends his days alone and misses his dad who was killed in the war. Through his friendship with an old man who tends a seemingly dead cherry tree, Taichi learns about the tree and gradually becomes more positive.
(Source: Treasures of the Heart)
VitaminX Addiction
The story is set at Seitei Gakuen, an elite private academy that teaches every level from kindergarten until college in Tokyo. A new female teacher named Minami Yuuri is starting her second year of teaching here, and she is now moving up from teaching middle school students to the assignment she had sought after: grammar for high school students. Unfortunately, she gets assigned to class 3-E. The class, called "Class X," is an infamous group of seniors who lack study skills; it is said that all of their previous teachers have retired due to ulcers or neurosis. Minami must try to reach out to these students, including the six leaders of the class "B6" (Baka 6), and get them into college.
(Source: Anime News Network)
Sotsugyou: Graduation
Regardless of how students handle the many academic challenges facing them, they all know that there will come a day when they will leave all the hurdles of scholastic achievement behind and tackle the triumphs and sorrows of true adulthood. One thing that many young people don`t realize is that this often means leaving behind the friends that have been with them through their youth.
(Source: AnimeNfo)
BE-BOP Kaizokuban
Onna Senshi Efe & Jira: Gude no Monshou
Two partners Effera and Jiliora escape from a slave boat with the aid of their friend Orlin and a young boy named Kilian. When Kilian is killed in the escape Effera and Jiliora take it upon themselves to return Kilian's pendant to his two siblings who are being held captive by Baron Celdion, who is plotting to take over all of the neighboring countries.
(Source: Anime News Network)
Bounty Hunter: The Hard
Sin in the Rain
It is raining in the Tokyo at night. A woman is wandering soaked to the skin. Her name is Kimura Yu. She had a trauma that her parents were killed, and she experienced another tragedy that her reliable councilor, Kanzaki, was killed miserably. The person who suddenly appears in the rain and saves Yu is a detective, Takamizawa Kyosuke.
Souryuuden
Four brothers with magical powers must use them to protect themselves and friends from an enemy bent on destroying them.
(Source: Anime News Network)
Shadow Skill: Kurudaryuu Kousatsuhou no Himitsu
The story takes place in warrior kingdom where a deadly martial art called Shadow Skill is practiced to defend the continued existence of the kingdom. Dreaming of becoming an invincible warrior one day, like the legendary warrior named Scar Face who has defeated 2,000 opponents, the boy named Cau Ban trains hard with his older adopted sister Elle who has mastered Shadow Skill. A deadly combat breaks out when a rouge pack of intruders suddenly assaults the castle to steal a box that contains a secret...
(Source: Anime News Network)
Soukou Kihei Votoms: The Last Red Shoulder
Released in 1985, this OVA tells a critical part of the story between the TV show's Uoodo and Kummen arcs. Although the TV series covered the Red Shoulders in some detail, we didn't get to see much of Chirico's time there or the people involved, and we get both of those here.
(Source: mahq.net)
Otogi-juushi Akazukin (OVA)
Long, long time ago there where both science and magic in the human world. But God became afraid of the Human's unlimited potential, so he divided the world into two and sealed them apart. One world with magic and the other one with science.
Souta is a normal boy except that he has the "key" in his body to break the "seal." The evil witch Cendrillon want that power and tries to take it. Akazukin and Val, a silver wolf, came from the magic-world to prevent her from that.
A grand story of a boy who will lead a checkered life and girls in fairly lands has just begun.
(Source: AniList.co)