Description:

Running into your new stepsister in the bathroom is not the best way to make a good first impression, which Basara Toujou learns the hard way. When his father suddenly brings home two beautiful girls and introduces them as his new siblings, he has no choice but to accept into his family the Naruse sisters: busty redhead Mio and petite silver-haired Maria. But when these seemingly normal girls reveal themselves as demons—Mio the former Demon Lord's only daughter and Maria her trusted succubus servant—Basara is forced to reveal himself as a former member of a clan of "Heroes," sworn enemies of the demons. However, having begun to care for his new sisters, Basara instead decides to protect them with his powers and forms a master-servant contract with Mio to keep watch over her. With the Heroes observing his every move and the constant threat of hostile demons, Basara has to do the impossible to protect his new family members. Moreover, the protector himself is hiding his own dark secret that still haunts him to this day... [Written by MAL Rewrite]

Description:

Japan engineered an armed powered exoskeleton "Infinite Stratos" (IS) and it became the mainstream of weapons. Since only women can operate IS, women dominate the society over men. Orimura Ichika is a 15-year-old boy and accidentally touches an IS placed in the IS pilot training school. He is found to be the only man who can operate IS and forced to enter the training school. Ichika's busy school life surrounded by girls has begun.

Description:

When an extraterrestrial organism known as "Savage" attacks mankind, the only technology capable of combating the enemy is a weapon known as “Hundred.” A survivor of a Savage attack, Hayato Kisaragi is a teenager boasting the highest compatibility level with the aforementioned technology and as a result, is invited to master his skills at Little Garden, a prestigious military academy aboard a battleship. Over the course of his intense training for the battle ahead, he immediately attracts the interest of multiple female peers and gets drawn into a number of incidents as he tries to fight against the creatures that now inhabit Earth and threaten its safety. [Written by MAL Rewrite]

Description:

Takuma Akutsu has a “unique” appearance that, unfortunately, leaves him feeling isolated and alone among his high school classmates who shun him. Enter the Valkyries sent by Odin himself! Once they descend into Takuma’s life, he discovers they aren’t scared of him one bit! In fact, they’re super keen to get to know him better. As the intimacy between the Valkyries and Takuma grows, so too do their powers. And that’s a good thing because they’re on orders to slay the vicious monsters intent on destroying the earth. How far will they go to deepen their connection, level up, and save the world… by any means necessary!?! (Source: Sentai Filmworks)

Description:

At St. Mihailov Academy, a series of serial murders have taken place with all the victims being young women. Who is this rampant culprit? And which beautiful maiden will fall prey to his evil next? After a horrible day of being harassed by their classmates, the adopted sisters Mafuyu Oribe and Tomo Yamanobe stumble across an injured young man and decide to bring him back to their place to recover. That very night, Mafuyu ends up at the mercy of the infamous serial killer. Strangely, he demands not her life, but instead an icon left behind by Tomo's father. Luckily, Sasha, the mysterious young man that the sisters had taken in, comes to the rescue just in time, helping Mafuyu avoid the same fate as the other victims. Sasha reveals that he is a Qwaser, an individual capable of controlling scientific elements by partaking in Soma, a miraculous essence found within the breasts of women. Capable of manipulating iron, Sasha crafts a giant scythe and slays the serial killer. He enrolls in the academy the next day signalling the beginning of a very "interesting" school year.Seikon no Qwaser is an action-heavy story that doesn't shy away from fan-service. Join Sasha and his allies as they fend off the evil that is nearing in.