Read Hero-san and Former (Female) General-san Manga:
The world is being invaded by beings from another dimension called Antinoids, that have many hidden abilities, a Hero of Justice, Rapid Rabbit, has risen up to protect it! Well, that was the case, until he lost the battle to the Antinoid General named "Honey Trap", and, as the general unmasks this gallant hero, she discovers "he" is actually a girl, and immediately falls in love, bei more.. ng unable to kill her! The general then gets fired from his organization, and, once more, finding herself next to the hero, their relationship and fight against whoever comes their way begins!