But that is the point: nobody is taking anything from anyone. If one of them is awesome the other one is not any less. You are you for yourself, not because of other people. I hope Sylvia and Irene will be the kind of characters secure about themselves enough to see what really matters: not peoples attention but love, their relationship as sisters.
What made Sylvia insecure and "ugly" was the toxic father and environment, not the attetion her sister was receiving. She wanted attetion too because she wanted to be loved. So I hope the author focus on the love aspect, not the attetion (this is only the appearence of the problem, the tip of the iceberg), and I want this to go beyond the superficial comparing and for a cute sister relationship to appear.
But, yep, I think I'm expecting too much from a isekai title...

I really want for this to not be cliche and Irene actually be a good and wholesome sister to Sylvia.
I'm tired of all the pointless female rivalry in the isekai titles, like it's mandatory for a spoiled and vain bitch to exists for us to hate.
It would be so awesome if they get along and be there for each other as sisters.