Can someone help me find

I can’t remember the name of this WEBTOON it may not be on here might just be on reaper scans website but it’s set in Korea and there’s a tower for awakeners and our MC gets to the top of the tower with his group but for some reason he keeps getting sent back to the beginning even though everyone else keeps getting out he’s stuck in there for years and he meets a lot of people climbing the tower during that time. Finally he gets out and he’s super strong of course since he’s basically been training in the tower for years and finds out that earth is actually also a layer that has climbers and he’s basically now the floor boss. Other than that I remember there’s a system that talks to him that looks like a girl and one of the people he trains in the tower goes on to be the mafia boss if China or something. If anyone knows this please help.