Looking for a webtoon, I've forgotten the title

The story premise is that a young man has died and wakes up in a purgatory world of the dead. He teams up with a girl ghost who tells him that he can reincarnate to the living world if he collects 100 of these tag things (I think they were tags). He meets strong ghosts with lots of tags, and the first arc is a typical action. It's all in black and white, and the art is pretty striking although I can't specifically describe it.

Later on things get more "cosmic", and you're introduced to a heaven vs hell idea, Adam and Eve, Archangels in heaven who've grown fat and lazy, a creepy devil character with a perpetually dripping nose.

I can't remember the title nor the names of any of the characters. I read it a few years ago. If that sounds familiar to anyone, I'd appreciate some help tracking it down, thanks!