I never would’ve thought that reaction “Wow just like magic” can be used in such a context…

While this attitude Shizuka had may throw some people off, I think this could be some form of her dissociating after witnessing a traumatic event

I guess all the happy shots from the trailer were just in Takopi’s mind.

I think we also may be seeing some events through Takopi’s eyes as an unreliable narrator, like those sparkle effects around Shizuka’s face. I guess we’ll find out in the next episode whether this was what I think it was or the show is starting to lose its footing by trying to be too edgy and doing things just for the shock value