One of the three great families responsible for the original creation of the ritual known as the Holy Grail War. The Matou family magic specializes in binding and absorbing; enslaving other beings to oneself, incorporating other energies, and so forth. The Matou family is responsible for devising the Servant System of the Holy Grail War ritual, as well as the Command Spells which bind Servants to their Masters. However, their lineage fell into decline many years ago, and present day heirs of the original line are no longer capable of manifesting magical power. With the adoption of Sakura Matou, the family had hoped to rekindle itself and become powerful once more, but she proved to be ill suited to this goal and has no desire to continue the Matou family ways.