* ''Stellvia'' takes place in a world where war is such a distant memory that most of the teenage main characters don't even know what it is. This makes it all the more tragic when a confrontation with alien spacecraft turns suddenly, devastatingly deadly. The slow, haunting rendition of the opening theme playing in the background--a more upbeat version of which previously played in-show during [[SugarWiki/MomentOfAwesome moments of triumph]]--doesn't help. Neither does finding out later that the aliens were actually trying to help humanity, and only killed in self-defense. If the Foundations hadn't fired first, no one would have died.
* The entire last episode, but especially when Stellvia goes into the fracture.
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