Fans describing Attack on Titan to new viewers and readers would have to discuss a few things: the last of mankind is battling man-eating giants and the story that unfolds only gets more twisted from there. Fans more willing to give out spoilers may also bring up child soldiers turning into giants (or controlling them from the nape of the neck), the fact that AOT is a war story, and that there's tragic moral ambiguity throughout.
Source：https://www.cbr.com/aot-mecha-anime-comparison/
