I've actually thought about this ship before, believe it or not.
One reason being my son; Miki is his biological sister, and then Flower is his surrogate/adoptive sister. Rivalry and impromptu bonding ensues.
Although my version of Miki is kind of a female Fukase (although with a little more common sense), so Flower might have an aneurism from the stupidity/bad decisions she can commit.
And both of them are hot-tempered, so I can only imagine the arguments...
Warning: Don't piss this ship off. They can/will hurt you.
7-8/10
See ya next reaction!!