What about conquer online?
It has ninja, really cool, can use two katana. And they are trying to make a new class, maybe assassin, monk or pirate, they will adopt players' good ideas.
It gonna release mounts on july 16th.
It is easy to level up easily by using some items, exp balls and dragon balls, etc. you can do some quests to get exp too.
I do think it has good graphic.
You can summon guards or some other monsters after reborn.
If you like it, you can check the main page of conquer at
http://co.91.com/index/