I forgot this one manhwa, I need helpp

This was a BL system-type manwha. It started of when mc had a dinner with his friend who asked "what if life was like a game" and some stuff. And when the mc went to sleep(?), he suddenly found himself 10 years ago when he was still a highschooler and what appeared infront of him was a game-like system that is connected to the ml. At start he ignored this and immediately went to his grandma who he didnt see much and just ignored back then. But he starts to explore the system and kinda finds out it was connected to the ml, so they started to get to know each other. Ml was kinda icked at mc at the start but slowly starts to open up. The mc had black hair, while the ml has blonde hair and sporty type, a runner that is. I remember one plot point where the mc wanted to break up with ml at winer cause he only has limited time until he goes back to his original time. Σ( ￣□￣||)