Lien was born in Ridenbourg, The Academic City. His father was a famous archaeologist who was imprisioned, leaving Lien on his own, due to his mother dying when he was very young. Because of this, Lien was raised in the Royal Library by officials. Lien grew up a mathematical prodigy and one day, found a note left by his father telling him to go the Olvie Ruins,where he discovered Sigma.