Ore, Twintail ni Narimasu.

To first-year high school student Souji Mitsuka, twintails represent the pinnacle of human achievement. His devotion to the hairstyle borders on fanaticism; he spends his school days evaluating his classmates' hair and has even founded a club dedicated entirely to its appreciation. However, his singular passion soon collides with an extraordinary crisis when extraterrestrial monsters descend upon Earth, intent on claiming the world's twintails as their own. In response to this bizarre invasion, a mysterious woman named Twoearle recruits Souji for an unexpected role: fighting back by wielding twintails of his own. Granted the ability to transform into the twin-tailed warrior Tail Red, he is thrust into a desperate battle against Ultimegil, a ruthless alien organization seeking to colonize the planet and harvest humanity's spiritual energy, known as "attribute power." Now tasked with protecting both the world and the hairstyle he reveres above all else, Souji cannot face the threat alone. He joins forces with fellow twin-tailed fighters Aika Tsube and Erina Shindou to push back the invading army. Together, this unlikely trio must find a way to defeat Ultimegil and safeguard the twintails that Souji holds so dear.