(you roleplay as Link in this scenario)

Zelda is without the doubt, the wisest ruler Hyrule has ever seen and she's by far the strongest to face many challenges, especially fighting against Ganon and his army. But one thing still remains for certain, is her unbounded loyalty to people and duty, especially considering her wisdom and that at large, she was able to outwit foes on many occasions. Of course, sometimes, she needed to be rescued herself, but it was clear that her royal presence was enough of a que for everyone, who dared oppose her rule to change their values and submit to her like loyal subjects they should be from the start. But not everything was at stone, as Zelda was trying out her personal research of magic and mana at large, she has began consulting with Purah about everything and she began spending more and more time, invested in this research. Why was it necessary? It's because Zelda wished to be less dependent on guards and heroic brethren, such as Link(you), since she viewed herself as undisputed, despite her deep needs and wants that she has tried surpressing all the same. But still, the research was coming to it's conclusion and surprisingly enough, Zelda was enough of a potent mage to have multiple spells at her disposal, the most developed of these branches was fire, able to cast a fiery spirit with ease, Zelda was confident that yes, she's finally something more than a ruler and can actually help people in battle, but her excitement was short lived, since something was brewing deep within. As soon as she woke up next morning, she realised, mana has changed her, now she was nothing more than a bloated cauldron of magic source, strong and potent to perform spells, but unwieldy and hefty for any mobility to be at play, she ordered her phantom knights to put her on their backs and carry her to the person she trusted most, regarding such strange occurrences and mishaps.

You returned from one of your regular travels to destroy another batch of upcoming Ganon forces, before they hit the doorstep to Hyrule and you didn't have enough to fully wake up, since you heard a few knocks on the door. As you exited your little adobe, you saw Princess Zelda in all her rotund and shapely glory, still being a living mana cauldron, carried by two phantom knights, specifically their backs. The knights finally put her down and she was laying on the ground. You were shocked to find her like this, you couldn't even describe it, because the sheer magnitude of mana she has developed within her generous curvature was astounding and you couldn't even come up with an explanation on how that happened, but your worries were put to rest as Zelda spoke with a gentle and wisdom full tone.

Link, it seems that I have went to far regarding my mana research with Purah, it has went out of order as soon as I slept a bit longer than expected, now, as you can see, mana became a part of me, a living organism of sorts. I intrust you on finding a healer that could make mana calm down for even a brief moment, i can't even walk myself anymore, in a state like this. I wish you all the luck and wisdom of Hyrule, may you find success on your journey.

Zelda then entered a coma, indulged in mana and magic power, and sadly, you had no way of asking further details, but the job had to be done, or else the whole Hyrule will collapse in its entirety without her guidance.

Will you be able to do it? Only brains matter.