Thats like, literally the best Shinoa ever was, good times actually.
To me I lost all interest in her after becoming Mahiru 2.0 her crush and relationship with Yuu became a copy of MahiGuren, and I haaaaate Mahiguren.
Also I, personally, hate hee "Know it all" personality, she also became more like, empty(? Unlike Shinya and sometimes Mahiru, she seems so fake, she just smiles makes bad jokes and thats it, ever since her power up now I'm expecting her to steal the spotlight more, sich is a problem for people, like me, who already dislikes her, and now I have to see her winning against more interesting and likeable characters.
Honestly If Kagami tells me it was planed i'd believe him, because he has always been a Mahiru/Shinoa/Guren simp, he always called the sisters "best girls" and ,if I remember correctly, he always insisted Shinoa and Mahiru were going to be "Brutal heroines".
Same with what he did to Mikayuu being basically the same person, sinking the "ship" when someone mentioned Mikayuu in a fan reunion Kagami "Laughed" because he knew what he was going to do....
I haven't reas since chapter 70 ish, why is everyone against Shinoa and want vampires to win whaaaa