He started off as just a simple peasant boy living alone on the streets with his father, life just never went his way. When he was five he got bullied for being poor. The bullies went from just name calling to stealing what little Wai had. It only got worse as he got older. He started getting beat up by the neighboring kids. A few bruises and cuts, turned into fractured bones and deep gashes then got as bad as broken bones and missing fingers. They finally moved to a different city. The first thing that happened in the new city was that a thief stole all their belongings. Once a week they were a target of a thief, even if they barely had a penny to their name, the thieves would take it from them.
After a few months his father went missing but there was nothing Wai could do to help. The police wouldn't help and he barely had any energy to even eat. A few more months went by before the people of this city started stoning him telling him to leave. He got blamed for anything bad that happened in the City, even though he has never broken a single law in his life. Wai left to find a new home, a small town might allow him to stay. Nothing happened to him on his first day, not even the first week. Everything seemed to be going okay for him. Instead of begging for food on the street, he was actually able to get a job.
After a month of his job he got kidnapped and someone stole his money and an organ. Wai was set free but when he got to his job the owner told him he was fired for being late. He was back on the streets begging for food for another few months. Then a stranger saw him and offered Wai money for being a test subject. Wai was so hungry and so thirsty, he agreed to be this mysterious man's test subject. At first it was fine, just a lot of blood work and measurements but things went horribly wrong when Wai woke up with stitches on his stomach and missing organs. It was a miracle Wai was even able to survive with so many organs missing. He fled to another town in hopes he could start a new life but things seemed just as bad.
On the first day he was abducted the same mysterious scientist who then removed his eyes and one arm as punishment for running away. When Wai started screaming due to the lack of anesthetics the scientist sewed his mouth shut . The scientist then said he was gonna test a serum for being able to use echo location. When it seemed to not work the scientist just threw Wai back on the street. For a few days Wai wandered the lands blind, without an arm, mouth sewn shut and shredded clothes. He found himself being able to notice vibrations bouncing off objects. Wai ended up in front of the league of legends who took him in. They fed him and gave him a home and in return Wai started to fight for them.