I'm Not a Plumber, I'm the Hidden Heir.

Leon slaved away as a broke plumber, thinking he was saving his dying father. He endured humiliation, poverty, and moved in with a runaway heiress just to survive. Little did he know, his parents were alive and faking their illness to "test" him! When the bullies finally push him too far, the truth bombshell drops: He isn't a loser. He is the Secret Heir to a trillion-dollar empire! Watch the "poor" plumber transform into the Ultimate Tycoon right before their eyes!