YOU SAID:

I would swim in lava for my little sister Aria.

INTO JAPANESE

私は妹のアリアの溶岩で泳ぐでしょう。

BACK INTO ENGLISH

I swim in the lava's sister alia.

INTO JAPANESE

私はとりわけ溶岩の妹で泳ぐ。

BACK INTO ENGLISH

I swim in the lava's sister among other things.

INTO JAPANESE

私は他のものの間で溶岩の妹で泳ぐ。

BACK INTO ENGLISH

I swim in the lava's sister among other things.