It looks like you’re referring to the Instagram Threads account (or similar spelling) and asking for the “proper story” — meaning you want a clear, factual breakdown of who she is, what happened, and why people are talking about her.
However, based on my knowledge and search results as of my current training data (and not live browsing unless you’ve enabled that feature), there is for an account exactly named kiraaishere on Threads that has gone viral or sparked a major narrative. kiraaishere threads