幼女になってしまった助手を元に戻すべく、手をつくしたものの
何が悪かったのか、さらにまゆりまで幼女化。
しかし、小さくなった以外であまり変わらず、相変わらずの性格と食欲で
バナナを半分しか食べられないということもなかった。
・・・そんな世界線

He meant to turn his helper back from being a baby, but it seems something went wrong
and now even Mayuri turned into a little girl.
But, even though she's tiny she hasn't changed much, her characteristics and appetite are still the same,
and she's never been seen eating only half of a banana.
...This is that world line.