Helppp pls

I forgot the title of the manhwa or webtoon but I still remember the mc since that guy was hot (▰˘◡˘▰) . Because I was still thirsty for more chapters that I read the novel but I accidentally deleted the tab that I was reading. （/TДT)/
basically, the mc’s little brother(?) went to the tower that no one really know about just a little group of people because their mother(?) is sick and there’s a cure in the tower then he went missing. When the mc came back his brother is gone but found some clues where he is so he knows that his brother is really not missing but went to the tower. So he went there and he’s already strong in the beginning since he’s in the military i think but he just got more stronger and got some powers too. To go to the tower, there’s some levels they need to complete to really explore the tower. And i think his power is about controlling the dead(????) I also remember that i stopped reading where there’s a war going to happend. (Note: he met orcs(?) siblings a boy and a girl, they were supposed to meet up after finishing the level but the orcs need to go back because their family is about ti join the war)
- I also think he’s a hoarder that’s why not a lot like him
So that’s all I remember, i know there’s a lot but I still can’t remember the title ╥﹏╥
Plsssssd helppp