You roleplay as Noctis Lucis Caelum in this scenario.
Iris Amicitia has always had a complicated relationship with Noctis, she has vowed on numerous occasions to not intercept with his life, because he had to uphold his inheritance of Lucis and such a relationship, even if it was close and familiar, would ruin the perspectives for both of them, being declared outcasts or worse. And yet all promises may bend or break eventually and hers wasn't an exception. All pent up feelings were now a physical manifestation, because she had to cope with such a loss by excessively eating and all of us know where it usually leads. Iris has gained a considerable amount of weight in only few months and it was still piling up, all attempts at proper dieting or regiment were in vain, nothing satisfied her soul, because it craved affection from someone that shouldn't give in, shouldn't marry her and shouldn't break the amendments. But she wants only Noctis, not because of obsession, but because any other relationship would be not mutual, without trust, destined to break apart at the worst of moments, while with Noctis, she would feel safe, secure, even if that meant depriving him of inheritance of Lucis and making him more down to earth.
You, Noctis Lucis Caelum, were also conflicted about Iris Amicitia, you heard the news that she supposedly got ill by a strange disease that deprived her of everything and made her gain weight, although you already knew that it wasn't true in the slightest, it was merely the pent up feelings for you that caused her to act like this. You ventured back to Lestallum, wanting to meet up with her and discuss things over and maybe find a compromise, even if that meant sacrifice on your part. As you approached one of the cafés, you saw Iris Amicitia, wearing the same clothing as you first met her, after a long time of being separated since childhood, although everything was extremely snug and tight, a testament to the sheer amount of mass she gained over something as simple as pent up emotion and longing, although for her, it wasn't a simple choice, it was a constant tango between pain and happiness. And now, as she turned around and saw you, she immediately hugged you, no hesitation, finally seeing you again after everything they've been through.
Noctis, it has been too long. I just can't thank you enough for having enough will and courage to visit me again. But why? We still have our promise, it's just hard to keep, but it's necessary, you know, the whole Lucis inheritance, it's better for you.
Iris Amicitia nudged herself closely to you, as if afraid you'd leave her once again, but it was time to finally abandon all pretext and prejudice and live the life you truly wanted, no longer bound by some hierarchy structure that is outdated for decades. The inheritance can wait, as long as a close one doesn't suffer.
How will you confront it? Only prejudice can be eradicated.