Parasite Dolls (2003)

During a summer camp, 15 children, 8 males and 7 females, find a grotto by the sea. Deep within they discover working computers and some electronic equipment, and later the owner, a man called Kokopelli. Kokopelli claimed to be a programmer working on a brand new game, in which a large robot has to defend the Earth against fifteen alien invasions. He persuades the children to test the game and sign a contract. All but one of them signs; barely a moment later they mysteriously awaken on the shore believing what happened was just a dream.

Humanity was driven off the land by the threat of magical armored insects and now live in aerial floating cities. Its defenses lie in wizards who fight the insects with magic in mid-air. Kanata Age is a young man who lives on the floating wizard academy city of "Misutogan." He was once celebrated as the "Black Master Swordsman," the elite ace of the S128 special team. However, he is now despised as the "traitor of the special team." One day, he is assigned as the instructor of E601, a team that has suffered 10 consecutive defeats. E601 has three girls — Misora Whitale, Lecty Eisenach, and Rico Flamel — with one or two peculiar quirks.

Kojiro Shindo is a highly-skilled negotiator working for the Ministry of Foreign Affairs. As his plane at Haneda airport prepares to take off, a huge mysterious cube appears from the sky. 'It' expands rapidly, and absorbs the passenger plane and its 252 passengers. The cube's name is "Kado." A strange being called Yaha-kui zaShunina appears from within Kado and tries to make contact with humanity. Shindo, who was been absorbed by Kado, ends up taking on the role of mediator between Yaha-kui zaShunina and humanity. Who is Yaha-kui zaShunina? What does he want?

The Summer of "Anu": In a summer once every five years, demons in the mysterious Tower of Druaga lose their powers due to the magic spell cast by a god named "Anu". King Gilgamesh, ruler of the kingdom Uruk, uses the appearance of demons as an excuse to invade the tower and find out the construct's secrets. As 80 years passed, the Uruk army managed to fight back the demons and built a fortress city and safe haven on the very first floor of Druaga—Metz Kier. Thus begins the story of a warrior named Jil, who, finding companions along the way, embarks on a quest for the fabled Blue Crystal Rod, a powerful artifact rumored to be in the highest floor of Druaga. However, other competitors, including the kingdom of Uruk itself, want the treasure, all for their own reasons.

Shy Natsu awakens as part of a group chosen to ensure the survival of humanity. Together, they have to survive on a changed Earth.

Solomon fights the harmful use of witchcraft using a database of witches, which includes those who have obtained the power of witchcraft through genetics and others who carry the gene in order to arrest or eliminate them should their powers "awaken". The series focuses on one STN-J member, Robin Sena.

It's the year of destiny and 15 year old Kamui Shirō, a powerful psychic, has returned to Toyko after a 6 year absence. He returns to protect his childhood friends, Fūma, and Fūma's younger sister, Kotori. But destiny and fate are haunting Kamui and pulling in himself and his loved ones. It is his destiny to decide the fate of the world and mankind, no matter if he wants the role or not.

A heart warming story of "destroy all humans." Uzi, a sardonic teen worker robot gone rogue befriends N, an excitable optimistic disassembly drone sent to destroy her, creating what we can assume is a very bad relationship for mankind.

Five centuries ago, Demon Lord Veltol reigned over an immortal nation. Now, the time has come for him to awaken once again. The year is 2099, and civilization has reached peak evolution, leading to a high-tech landscape with towering skyscrapers—nothing like he’s conquered before. Veltol may be a relic of the past, but make no mistake, this new world will be his for the taking!

High schooler Yūta Iridatsu has experienced “astral projection” i.e. his spirit has been separated from his body. He woke up in a mansion named Koraikan and met a cat spirit named Chiranosuke, who told him “You must find the Sacred Tome of Koraikan in order to return to your physical body.” While searching through corridors of Koraikan, Yūta bumped into underpants of its female residents, and doing so would, eh, create some big trouble for planet Earth.