You know... maybe there should be a "You're missing the point" pool on Danbooru.
A sadist is someone who delights in aggression, torture, and domination, like Kazami Yuuka. It's better to keep the original term used before translation.
the second sentence refers to the usage of "S" in this chinese translationReimu...
You think...it's enjoyable to beat up people, is that it?!Even if it were danmaku battles...
I wouldn't want to unless it was Cirno...Haah~Enzyme Power - !What the hell!You big sadist!Burning rageWhy did she understand it like that