何が作用したのかいきなり助手が幼女化
今までの態度はなんとやら、オカリンに懐き、
ひざ上指定席から動こうとしない

・・・そんな世界線

Something they made turned the assistant into a little girl.
Somehow her mood has changed and she's become affectionate to Okarin,
not moving from her reserved seat on his lap.

...This is that worldline.