As stated before, only roughly one percent or less of humans would ever be aware that any changes occurred at all.
This story branch will focus on that one percent, or specifically, one person in particular.
This person, although they witness their own change, and the changes of others they speak to, will be the only one who notices the changes!
They may meet others like themself who fall under that 1%, but for the most part, most people will think it's perfectly normal.
The question now is, who is this person?
They could be anyone - even you!
(Author's Note: If you pick one of the "you" options, be sure to tell it from your perspective. Have fun! ;))