Gate 2

The military fantasy series begins when a gate appears in Tokyo's Ginza district sometime in the 21st century. From the gate pours out monsters, knights from middle-age Europe, and other fantasy-like beings, and they kill many of the citizens of Tokyo. This event is known as the Ginza Incident. The government sends a small group of soldiers from the Japanese Self-Defense Forces (a replacement for Japan's military) to the alternate world beyond the gate. Led by otaku soldier Youji, they find that the villages in the world are being attacked by a dragon. An elf girl who is a survivor from the dragon's rampage joins the group in their travels across the dangerous new world.

Second season of Gakusen Toshi Asterisk. Less than a century ago a meteor collided with the planet's surface and the resulting disaster caused the next generation of humanity to develop a wide variety of amazing abilities. In the center of the meteor's crater lies Rikka, a system of six academies known as the Asterisk. Ayato Amagiri enters the Asterisk as a transfer student hoping to compete in a special battle event known as the Festa. However, he quickly finds himself on the bad side of one of the strongest fighters around—the beautiful but fiery Julis-Alexa von Riessfeld. To stand against her he'll have to rely on his own sword-wielding ability, but when the tables turn, will they be able to team up to take down the competition?

When an online game turns real, trapping its players in its virtual space, the strongest of them, Shin, rises up to put a stop to the madness. But just moments after defeating the game’s final boss, Origin, and freeing everyone, Shin is transported 500 years into the future of the in-game world. Armed with unrivaled strength, the young swordsman embarks on a legendary journey.

It is Tokyo, 1969. Earth is under the attack of the "Invaders." Fortunately, though, the public is unaware of this. But to the secret orginazation, A.E.G.I.S., the threat is very real, and it is up them to stop this invasion. One day on his route to high school, Ukiya Shun observes a battle between a young girl and a group of Invaders. He ends up helping her and discovers that much like the girl, he possesses the ability to generate a "gate" of special power that only a few other people are gifted with. As a result, Ukiya then joins A.E.G.I.S. in an effort to recruit other Gate Keepers in order to protect the city, all while doing his best not to imitate his late father, whom he dispises.