Pls help find the manhwa

Forgot the title but it's a Korean manhwa, about two childhood friends, one who grew up in the sect cus his father was the head of it (MC) and the other who was taken in by the father as a kid (ML). They grew up together and developed feeling and fucked like pnce I believe before the sect got attacked by the enemies who were also after ML due to his past, and MC and ML got seperated before they could talk about their stuffs. MC believed that his father died during this attack and was focus on revenge but in actuality the father was actually alive and was plotting the whole time as it was revealed near the end.