Some of us are still holding out hope that Moka will come to her senses and Tsukune will get to marry all the girls.
I find it hard to believe that, if she realized what she was really asking of Tsukune, that she could actually be so cruel and callous to him and the friends she loves.
The outer vestige of the Moka character is supposed to be the embodiment of kindness and caring.
It is the kind caring bubbly nature of outer Momoka, the girl who would do anything for her friends and go out of her way to help strangers, that he fell in love with from the beginning.
Later as he got to know her he fell in love with the inter persona of Moka when he realized that she would fight any monster or overcome any obstacle to protect the ones she loved but also I think when he realized that strength was a shield to protect her own emotional vulnerability.
If the two of them would actually stop and think about the consequences of Tsukune choosing her and only her as she demands; they would realize that that choice would destroy Tsukune and her friends, the ones who actually survived it would despise her the rest of eternity. Not to mention the fact that Tsukune would eventually come to resent her.
No! The only right way for the story to end is for them to all end up together, for better or worse, richer or poorer, in sickness or in health. Lol