A well-constructed plot, well-written/developed characters, and appealing presentation. Of course, an anime can still be enjoyable while still being shallow, having stereotypical characters, or unappealing voice acting/art/animation/music, but really, most great anime tend to have a combination of all of these.
I also personally prefer a story with truly relatable characters and genuine emotion instead of something calculated for emotional impact. Passion from the creators is also appreciated (since nobody likes or should like a half-assed cashgrab). An anime that makes me think is more likely than not to be something I appreciate more and appreciate discussing more.
I also personally prefer a story with truly relatable characters and genuine emotion instead of something calculated for emotional impact. Passion from the creators is also appreciated (since nobody likes or should like a half-assed cashgrab). An anime that makes me think is more likely than not to be something I appreciate more and appreciate discussing more.