"were you worried id trow a tantrum?""how long are you going to treat me like a child?" all that while trowing a tantrum like a child and later cry. honnesly shinako and her relationship with the brother is the worst part of this manga, yuu was a dick(we dont even know what he look like) and ruu is a grown child who cant take care of himself, force his filling on other and treat shinako like she belong to him. As for shinako she was really cool the first few chapter but now she just borring ther is nothing interesting about her, she is blant and on top of that she act like their servant.