Nui Harime always wanted her own sister. And then she showed up at the door.

Based on the song "It'll Be OK" by Sherclop Pones (Friendship is Witchcraft)  https://www.youtube.com/watch?v=elUIbi883v8 https://www.youtube.com/watch?v=MpE0ZY8FODk

I've got an idea for this after episode 20, and I wish I could've finished it before 21 aired because it would've been quite prophetic... But well, a bigger variety of Nui/Ryuko scenes didn't hurt.