Nervous about being alone with her new boyfriend, Takeda, Yuma insists that her once angelic childhood friend, Hotaru and Hotaru's boyfriend come along for a double date. But when Hotaru begins to touch Yuma and volunteers herself as "practice", Yuma feels inner turmoil as she enjoys the now devilish Hotaru's kiss more than Takeda's
When the black blade roars, all who stand in its path shall be torn asunder'! What is it that Koinzell, the mysterious young boy who wields the sword with such exceptional skill, desires' The fight against the 'Lances of Betrayal,' who were thought to have been defeated by the Seven Heroes, begins--And at battle's end, only the shocking truth will remain amid the pools of blood
Ryouta Sakamoto is one of the top-ranked players of BTOOOM!, an online battle game. But no amount of simulated warfare could have prepared him for what is to come' Ryouta wakes one evening to find himself dangling from a tree by a parachute with no recollection of how he got there. Before he can orient himself to his unfamiliar surroundings, Ryouta is attacked. As a barrage of explosives rain down on him, Ryouta realizes that he too has a pack of bombs'bombs that look very similar to the ones used in BTOOOM! Ryouta may have mastered the online game, but can he come out on top in this real-life game of survival
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
Akutsu Takuma wants nothing more than to be left alone, to live and study in peace. He has a terrifying face, which has prevented him from making friends and earned him the nickname "Akuma" (devil). However, he is satisfied with being alone and spending all of his time learning, hoping to become the good person his late mother saw in him.
All of this changes when he gets involved with the nine Saotome girls, who are Valkyries. Takuma is called by Odin to pair with them to protect the world from demons and the threat of total destruction. The Valkyries' power comes from love, and so now he must live with them and try to become closer to them. To start with, they prioritize his intimacy with the strongest Valkyrie, Natsuki. Will he and the Saotome women be able to save the world