4.544 out of 5 from 1,693 votes
Over a century ago, mankind was devoured by giant beings of unknown intelligence and origin known as Titans – creatures that eat humans alive indiscriminately and for no apparent reason. The remaining population has managed to survive the last hundred years only by building a multi-walled city capable of keeping the Titans at bay, training military recruits to patrol the perimeter and gather intelligence about their mysterious foe. Eren and Mikasa have lived a relatively peaceful life behind the city's walls, but when a massive Titan appears, smashing the outer barrier and unleashing a wave of terror, their lives are brutally changed forever...
In a post-apocalyptic world, humans, robots and cyborgs live in the Scrapyard - a landscape of twisted, rusted junk made up of the garbage sent from the above city of Zalem. In this place, the inventor Ido finds a partially-destroyed cyborg amidst the rubble, gives her a new body and names her Gally. With no memory of her past and an instinctual ability to use a powerful martial art known as the Panzer Kunst, Gally matures and relearns life's lessons while she travels the broken landscape, struggles to remember who she is and where she came from, and discovers the mysteries of Zalem.
The character of Misaka reminds me of Alita in a lot of ways (Not least of all being visuals...), both are fearless, kick-ass fighter girls who routinely face off against overwhelming odds. If you liked one, you'd probably like the other.
When the infected approached Rei and Takashi's school, it led to a gruesome blood bath that left the majority of students and staff dead or turned into the zombie-like monsters that have spread throughout the world. Together with a handful of other survivors, Rei and Takashi set forth to find their families in a world that is rapidly detoriating. Governments have collapsed, the killer disease is out of control, and people everywhere are trying their best to simply live through each day...
These two have something in common: fighting crude creatures for their own lives -- survival. SnK fights Titans(Giants) and HotD fights Zombies. Well, HotD leans more on fanservice but still..