I was messing around earlier and did a playthrough where I rejected everyone except Lin. In retrospect declining to save Mina was a bit dark, and also does not bode well for the future plot due to bird requirement. Eventually I did manage to get stuck as after getting back to Bow with Yua we go to Trouts mansion but the guard wont let us in...
Since you made it so that we are not required to recruit characters, im curious what do you have planned for the story after trout anyway?
After you get Yua, you should speak to Bosch at Viree. It should automatically teleport you and trigger the Trout's mansion part.
*Spoilers*
Failing to save Mina is a major plot point that will affect the game and lock you out of parts of the story but is a requirement to get the 4th ending where you recruit no one. It will just be you, Bosch, and Yua against the world. Basically you will take a boat from the rebel hideout to Evarai, but will not be able to fly at all in the game.
