Yukinoshita Haruno felt terribly stifled. Her own pure and adorable imouto had actually gotten entangled with someone right in front of her! Sure, it was another girl, but so what if she was a girl? Did girls not have malicious intentions? Little Yukino was not only adorable, but so innocent too...
Being adorable would make little Yukino the target of jealousy, while being innocent would leave Yukino vulnerable to harm. As an HENTAI-level siscon, how could Yukinoshita Haruno stand by and watch her imouto get hurt?
Even if the girl getting close to Yukino was cute too, who could say that cute girls had no sense of jealousy? Little Yukino was far cuter than that girl who looked so vacant!
Even if that girl named Mashiro seemed more innocent than Yukino when you got to know her, and even more... Still, Yukinoshita Haruno refused to believe it! She refused to believe that a JK that innocent and naive could exist in this world—unless that JK had an intellectual disability, or had lived cut off from the world since childhood. Otherwise, so-called innocence and naivety were nothing more than a persona.
If it came to putting on an act, she, Yukinoshita "Drama Queen" Haruno, could definitely act more innocent than that girl named Mashiro! Definitely!
Getting into high school meant that girl named Mashiro definitely had no problem with her intelligence, while the furnishings in her room—that whole collection of electronic devices—showed that she definitely had not lived isolated from the world. Once those two possibilities were ruled out, the more Yukinoshita Haruno looked at Mashiro's innocent appearance, the more awkward it felt—
Like a father-in-law looking at his son-in-law: the more he looked, the more he wanted the other person to vanish from the face of the earth! It couldn't