The child of a young and hardworking mother, Levi was happy for the first years of his life. His family situation wasn't good and his mother often struggled to make ends meet, but she never once let him in need, always keeping a smile on her face. However, Levi discovered that one thing did seem to make her unhappy: when he did magic. The first time he showed her his newly discovered magical abilities, she immediately told him to keep it to himself. The words left him confused and hurt, forcing the boy to practice outside. He soon came to find out why his mother was so adamant that he keep his magic a secret.

It was a rainy day and Levi was four years old when a tall and angry-looking man came to their house. Through the man's heated up argument with his mother, the little Levi learned that the man - Amos Heeren - was actually his father... and a powerful wizard. Gossip about the young boy practicing magic had soon reached Amos. As it turned out, he was long married and the father of three other children from his wife, but, to his absolute displeasure, not a single one of them were born with any magical skill. Seeing the news about his bastard soon as his last hope when it came to passing down his legacy, Amos decided that he'd collect the boy to raise in the ways of magic. Not listening to the pleas of either Levi or his mother, the man took him away, bringing him to his own house. Unbeknownst to Levi, Amos pressured his mother into moving away from Iadlain, from her son. Without much of a choice, she made her way to Song-Lu to start a new life, hoping she'd see Levi again someday.

There wasn't much the young boy could do to escape, so he soon came to accept his new life... though it didn't make it any easier. It was clear from day one that he was never meant to be there at all: Amos treated his son with disdain, seeing him only as a mean to an end. Amos' wife and children barely acknowledged Levi at all and when they did, it was only to insult him or voice their contempt, though they never hurt him out of fear of Amos' reaction. Teachers often complained that the boy was less intelligent than his half-siblings, suggesting that it might have something to do with his mother's bloodline. Levi took all the mistreatment silently, but grew up with the resolve of never becoming his father's successor.

Lessons were hard to understand and Levi often had trouble doing what Amos wanted, giving mixed results. It was only when the man caught Levi healing a small scrape on himself that he understood what was going wrong: the boy was a healer, not a mage. Enraged, Amos scolded Levi heavily, claiming that he wouldn't give up until the boy was a full-fledged wizard. Levi, however, saw their discovery as a chance to rebel; he'd become a full-fledged healer just to make his father fail. Time went by with Amos insisting on giving magical lessons to his son and Levi taking every chance he could to learn healing arts from tutors, hiding them from his father as he practiced. Life in the Heeren household was tense and the two fought almost everyday, but Levi was determined to succeed on his plan, eager to get revenge on the man who terrorized him for so many years... but his plan was cut short when the family discovered that their youngest - born while Levi was being trained - had true magical aptitude. Delighted by the news, Amos promptly kicked a fifteen year old Levi out of their house, announcing that he was done with him.

Left without a place to live or even a purpose, Levi hopped around inns for a while, working in odd jobs to pay his stay while he figured out what to do. It was in one of those inns that he met Feichín Ó Gríofa, an Exorcist, and Cináed, his son. A party sent into the Wispwood returned with grave injuries, being tended by the inn's staff until a healer could come. Being one of the few people in the vicinity who knew anything about healing, Levi helped Cinéad heal the party's minor wounds, watching as the elven Exorcist immediately took on the worse ones. Through their joint efforts (and a bit of competitiveness) Levi and Cináed soon finished their task and, as father and son were about to leave, Levi approached Feichín, asking if he would tutor him to become an Exorcist as well. As much as he wasn't the generous kind or even like healing so much to begin with... Levi's magic was all he had left. After pondering about it for a while, Feichín decided to take him in, seeing it as a good encouragement for his son as well.

Through his master's unorthodox ways and his ever-growing friendly rivalry with Cináed, Levi thrived. As much as he complained about them, Levi came to see Feichín, Cináed and the rest of the Ó Gríofas as the closest thing he had to a family, becoming rather invested in their affairs. It was through them that he learned about Atlas, a guild dedicated to venturing into the Wispwood to take clients through it - the same guild Feichín and the injured party in the inn belonged to. Although the job sounded less than ideal, (going into the Wispwood was not something Levi had ever imagined himself doing) he saw himself slowly being drawn to it. Atlas needed skilled healers, the Ó Gríofa family was largely related to Atlas, Levi felt indebted to them... One thing led to another and soon Levi joined the guild, having just finished his training as an Acolyte.

That was seven years ago. Nowadays, Levi has grown used to his job and his somewhat surrogate family, by this point. He spends his everyday accompanying his colleagues in seeking missions or just staying at the base if he's not feeling too well.