The Genius Game Streamer

The Genius Game Streamer summary:

In order to return to college, Lee Dohyun decided to live with his older sister in Seoul. However, his sister was an impulsive but filial daughter who fell in love with the world of game streaming. His sister, who was already into both streaming and receiving donations, forced him to play his first game. But then, Dohyun managed to show off his skills that no one knew about. A game broadcast, with a younger brother with God-given talent and an older sister with greed comparable to a devil, now begins!