Y/n Ackerman is the sister of Mikasa Ackerman. Like other Ackerman's, Y/n has incredible strength, but she doesn't have the "awakened power". Instead she has a 6th sense like ability to tell when something bad may occur. Usually she is warned by a gut feeling deep down, shortness of breath and the slight loss of hearing. Although, in the year 845 this sense becomes unbearable and leaves Y/n unconscious.