Ore, Twintail ni Narimasu. Pai

Soji Mitsuka is a typical high school student with a passion for twintails. One day, he meets a mysterious girl named Twoearle, who hails from a parallel universe, when monsters invade his town and proclaim that all twintails across the globe are theirs. These creatures thrive on "attribute strength," which is the spiritual energy derived from humans. Twoearle has given Soji the Tail Gear, a fantastical armor activated by potent twintail attributes. With this armor, Soji transforms into a girl and becomes the twintail warrior known as Tail Red, tasked with safeguarding Earth.