According to my imagination, the heroine is the adult Anna Kushina who travels through the Avengers timeline.
K's world is set in the second season when the stone slab has not been destroyed, and the kings and powers are still doing what they should do. The timeline is when Anna is twenty-one years old and has been the Red King for ten years.
CP probably didn't think about it well...
Introduction:
The world is just a cold, gray asymmetry.
Strong power is created to protect, not to destroy.
And love is made of bonds and flames that are eternally connected.
Your red is my red.
The red flame will always burn and beat for the people you love.