Description:

Hida Kizuna possesses the HHG (Heart Hybrid Gear) ability, but it is not strong enough to make him particularly important. His older sister calls him to transfer to a strategic defense school, where many of the students (many of which are large-breasted girls) use their HHG abilities to fight invaders from another world while wearing extremely skimpy pilot outfits. Kizuna's fighting ability doesn't measure up, but his sister has another plan—apparently having erotic experiences with Kizuna will allow the girls to replenish their energy or power-up. It looks like his new school life is going to be full of embarrassment (Source: MangaHelpers)

Description:

In the future, a meteor crashes into Earth and brings with it a virulent form of life. This virus is known as M34 and attacks humans, turning them into vicious monsters. Most of the human population is wiped out, thus government agencies are formed to fight the virus. One of the groups, NOA, inserts nanomachines into the bodies of its soldiers; these machines allow them to transform and fight off the infected. Unfortunately, the virus mutates and becomes too strong for NOA to handle. Now the fate of the world rests in the hands of 16-year-old girl with the power to defeat the virus. (Source: AniDB)

Description:

Marin is a typical junior high school girl with a sunny disposition and a loving adoptive family. Her life takes a drastic change when a mysterious mirage is seen in the sky above the entire earth. Killer androids called Monomakia descend to earth from the formation in the sky called Brigadoon and begin to hunt down little Marin. She discovers a blue bottle in a shrine as she seeks escape and from the bottle comes a protector, a sword carrying gun slinging alien called Melan Blue, together they must save the earth and deal with family crisis, school prejudice and the police and come to an understanding of Marins past and Melans unexplained mission, as well as learn to trust each other. Set in 1969 Japan with a colorful cast of friends and enemies. (Source: ANN)