תרגום - אנגלית-יפנית - Be the princess of your own fairytail

att vara huvudrollen/ prinsessan i sitt eget liv / sin egen saga.

Romanized:
Jisaku no dôwa no naka no o-hime-sama ni narinasai
Literally
Become the princess in the fairytale you make
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With "fairytail" = fairytale, of course