Billionaire Overnight: Inheritance of Glory (Dubbed)

Ethan Hill lives in a rundown house with his mother for 22 years and is dumped by his girlfriend for being too poor. One night, his billionaire grandfather appears and reveals that his mother is his only daughter, making Ethan the sole heir to his fortune. Gaining wealth and power overnight, he crushes those who once humiliated him and stands up against injustice for his classmates. In the end, he finds both love and success.