What is this? In all my years of reading romcom/romcom harem stuff, I have never seen such a depressing (?) way to make a confession, especially like that. After dropping that bomb on Kogarashi, I have no clue what's going to happen if this actually happens. Impossible to predict whether or not it will happen, as in both video games and manga there is always the chance of an occurrence that something like this doesn't go as expected.
Always been a fan of Yuna more than anyone else, so it would be much sadness if she goes away like that.
The one major flaw in harem stuff is that not very many people get what they want in the ending.