There are rules as how the combat goes, but it is done human-to-human, unless you need to roll some dice to decide thee outcome.
There are the GMs to make encounters most of the time, so it is more human-to-storyteller.
Also RPs can be done “full time” or just short term, really depends on who you RP with, as some prefer full time, some don’t.
I, with my totally objective opinion, recommend checking the server out to see how it goes, and if you would like to participate.
There is also a newer ad here: Tower of Heaven: Expansion RP server has 600 members!
If you want to check out some of the debate that was done on the rulebooks and all.