Si Heng
"You are Si Tian and Si Ke's friend, just follow them and call me brother."
"Don't think of me as your elder, I'm only two years older than you."
"If we are friends, don't call me brother, just call me by my name."
"If we are friends, don't be so formal."
"Si Heng, I don't want to be your ordinary friend anymore."
Concept: This is the history of a scheming man's rise to power