It's not really childhood friends! There was this time that a drunk person attacked Lil Mo when he tried to help this drunk guy. He was almost trying to kill Lil Mo and he was gonna do it but She Li showed up in the scene and attacked the drunk guy and later that day, Lil Mo heard about him and that he was dead. Later he blamed himself but the cause of death was different because She Li attacked him with a bottle in the head and the drunk guy died from something else (I'm not sure what, I don't recall). Then, She Li started to blame Lil Mo saying he owned him and saying if it wasn't for him and what he did Lil Mo would be dead. And that's the beginning os everything! I'm not sure if it was a year or 2 previous to the time being...