
I'VE BEEN SIMPING FOR A RED FLAG THE WHOLE TIME?NAWHHH POTATO IS MY FAVORITE I'LL MURDER HEESUNG IF HE MAKES HIM CRY:((

That's a cyberstalker harassing their victims with many account impersonating their targets. They are pretending to be trolls.
They claim we are overly sensitive troll victims of theirs. Which is a lie but shows everything they say is them "trolling" aka harassing and gaslighting their victims to where others will harm them. Like 99.999% of what they say about their targets are lies. Showing they are cyberstalkers. Ignore them, block them. https://www.mangago.zone/home/mangatopic/15987057/
Re-read this manga twice and I still find that sister of his so weird like girly what's wrong with you???