These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Nightmare Fuel: Watching Gisen scream in pain and agony after she literally dissolves after being sent up in the atmosphere is a little unsettling.
Tear Jerker: Episode twelve. Moe!Jubei disappears as a result of Muneakira kissing her, making Badass!Jubei her only personality. But then it turns out she's still there, and she combines with Badass!Jubei to form "Jubei Two." Yay! But then both Jubeis pull a Heroic Sacrifice. They seem to accept their fate in the end, but it's still sad. In the DVD/BD version, she comes back.
Awesome Art: The anime has a rather unique and fitting visual style that spices up the already well-animated action scenes and is generally just nice to look at.