A Round of Rainbow-Flavored Praise for My Senior Brothers

I transmigrate overnight, and before I can even figure out who I am, my heartless parents abandon me in my senior brother’s care. I was supposed to be a top student at a junior science academy, but now I’m just a little dumpling. Am I sad? Am I upset? No! The ones who should be sad are the people who want to bully me but aren’t good enough. The ones who should be upset are those who want to steal my things! Of course, there are a few people who are happy. What are they so happy about? Is it because they’ve got a junior sister who causes trouble everywhere?