To be honest, Renryuu Ascension is actually an example of a bad writing.
Some of the characters are quite interesting and fairly well written, but the overall story is terrible.
Summary of the whole plot:
"Who are you? I am king! Really? Yes! Ok, you are king, here is crown."
(No wonder the whole kingdom is on the verge of collapse. The people in charge are complete idiots.)
The other two are not bad, but if you want some really best Japanese creation
Kamidory Alchemy Meister and BunnyBlack [SofthouseChara] are among the very best.