Hybrid x Heart Magias Academy Ataraxia

Kizuna Hida has the Heart Hybrid Gear (HHG) ability, though he isn't particularly strong or remarkable. When his older sister asks him to transfer to a strategic defense academy, he finds himself surrounded by students-mostly busty girls-who use their HHG powers to battle invaders from another world, all while wearing revealing pilot suits. Kizuna can't keep up in combat, but his sister has an unusual solution: intimate encounters with him seem to recharge or enhance the girls' powers. His school life is about to get very awkward.