Top 11 in Top 15 hot ecchi anime not for kids.
FREEZING - Official Trailer
Nova - entities from another dimension - have begun to invade the Earth, threatening the existence of humanity. To combat them, the Academy of Genetics was founded, to train female warriors with special equipment against Nova, called Pandora, and their battle partners, the Limiters - male warriors. Soldiers have a special ability called freezing. Because of his promise with his late sister, the male lead Aoi Kazuya decided to go to Genetics to enroll. Here he met and then decided to become the Limiter of Satellizer el Bridget - a high-ranking student of the academy, an eccentric, unapproachable person, until Aoi arrived and… gradually changed her personality.