@erectorz
Mozuya isn't with her foster parents. The girl she saved at the end was Sanchi, and she didn't recognize her. Everyone split from each other excluding Kuzuhara and Yuujirou in America and the guardians.
@leigie
"At the end this manga is his, while it was okay to hear other people opinions, the decision is his to make."
Author is a woman. Though I agree with the rest of your post.