Corpse Party: Missin
An original video anime bundled with a limited-number edition of Corpse Party -The Anthology- Sachiko no Renai Yuugi Hysteric Birthday 2U (コープスパーティー -THE ANTHOLOGY- サチコの恋愛遊戯Hysteric Birthday 2U) spinoff game.
Fafner in the Azure:
The year is 2148. Two years have passed since the world was defended from the mysterious Festum, leaving the world in peace. Soushi promised Kazuki that he would one day return to Tatsumiya Island but instead he still keeps himself hidden, living his life in the peace that he created. But one day a mysterious ship arrives at Tatsumiya Island... a ship with nobody but a single sleeping girl on board. The peace isn't going to last as long as everyone might hope...
Knights of Sidonia:
The year is 3394. The solar system has been long destroyed by a strange alien race called Gauna. Now humans are barely maintaining population in their seed ships - the ones they also used to escape a thousand years ago. After several years of drifting though space, Sidonia, a seed ship with a population of over 500,000 people, is once again threatened by Gauna. Follow Tanikaze Nagate, a mysterious young man from the deep corners of the ship, and his friends as they try to strike back against these gigantic creatures and at the same time learn what they really are for the sake of humanity's survival. -MAL
Ousai Academy was originally an all-girls high school. Due to the declining birth rates in recent years, it was converted into a co-ed school. The first year male students would find themselves surrounded by girls and unfortunately, Tsuda Takatoshi is one of them. What's worse, he gets scolded on his first day by the student council president Shino Amakusa, which did not give a good first impression of him. Tsuda also meets the other student council members while getting scolded, and in the end, he gets late for class. As an apology for ruining his morning, Shino lets him join the student council for various of "reasons" and he accepts it, or rather, he's forced to accept. Thus begins his days as Tsuda soon realizes that he's the only normal student in Ousai Academy...