In an effort to be the son Howard Stark always wanted, young Antonia Stark creates the Y Suit. A suit that helps her pass as a boy, until it malfunctions after a battle in which she and the Avengers fight Loki. No longer able to pass, genderfluid Toni scrambles to create another suit, but finds love overlooks such things. FemTony, Will be FrostIron. T for now.