This is a hypothetical scenario where something has happened that affected the canoncity of Little Witch Academia.
In this scenario, following the break-up between Chariot and Croix, Chariot decides to leave and continue her tour. However, she took a short flight to help clear her mind of Croix. It's clear Chariot is burdened with heavy guilt over what has happened to their friendship and the harm she unintentionally done to the thousands of children that had looked up to her. But then, Chariot hears a loud crash and looks down to see a car having strayed off the road. She flies down and discover the two front passengers are dead but their little girl still alive.
Chariot immediately takes her and calls for help. Chariot takes the girl to the hospital who informs Chariot that the girl is fine. but is also informed that with the girl has no living relatives and with her parents gone, she's all alone. Chariot comes in and comforts the girl who is happy to see the woman. The girl reveals she loves Chariot and it's because she watches her show not long ago. This horrifies Chariot, realizing that she had accidentally stolen this girl's magic. Unable to bear the thought that this girl will be all alone and with no dream, Chariot takes it upon herself to raise this girl as her own. The girl accepts Chariot and tells the witch that her name is Akko.