Fullmetal Alchemist Blood Seal T-Shirt. Display a mystical-looking Blood Rune wearing this cool. Fullmetal Alchemist t shirt! The Fullmetal Alchemist Blood Seal T-Shirt is red with a distressed print. Inspired by TV's Fullmetal Alchemist about alchemist brothers Edward and Alphonse Elric, it features an image of the blood seal (or Blood Rune) used to bind Alphonse's soul to a suit of armor. Follow the Law of Equivalent Exchange!