Quote Originally Posted by HugMeTender View Post
Is it even worth MLBing Kingu if I already have Athena? Athena (seems) like she does what Kingu does just with better stats.
The rule of thumb is to eventually max every hime on your hand out. You'll thank yourself for doing that when future content (GO iirc) requires you to clear with a certain rarity cap to get rewards. And current content too, even though the only remotely relevant one is R hime in advent ulti.