Akiyuki lives on post-war Sentan Island, always rushing between the demands of his separated parents and his friends at school. But his carefree days come abruptly to an end when his school bus suffers an explosion, the first attack to plunge Sentan back into war. Akiyuki lives to find himself turned into a Xam'd, a mysterious creature, by the suspected cause of the explosion. Engulfed by Xam'd, Akiyuki is eventually saved by a red-haired girl, Nakiami, only to find himself torn away from those he loves. Now he must work to control and understand the creature within him, all while searching for his family and friends in a world steeped in the secrets and chaos of war.
Much to the annoyance of Kei, he and his childhood friend Katou have died, having been torn apart by a train. But rather than finding themselves at the gates of heaven, the duo materialize in a room full of strangers and a giant black sphere known as GANTZ. As if dying once wasn’t bad enough, the occupants of the room are then forced to embark on dangerous missions to kill strange aliens; missions that very few return from. Now, Kei, Katou, and a well-endowed friend must fight for their freedom with an arsenal of guns, high powered suits, and a very low chance of survival.
The common element here is you never know what is really going on until the end and then you're not sure if it made any sense or if it was worth it... Both earn my genre of WTF. Both had people turn into monsters for no reason. Both have heroes that suddenly turn into enemies, both have the complex psych paranoia.
Poor, short, and unathletic Joey Jones has always been picked on by the rich kids at his school. But when a lightning bolt turns a toy robot he salvaged from the trash into a hulking, remote-controlled bruiser, Joey becomes the only thing standing between humanity and a terrifying race of alien invaders, The Skrugg. If he's going to save the world, however, he's going to need the help of his friends Psy, Lina, and Professor Denton, along with more courage than he ever knew he had.
heroman and Xam'd: Lost Memories have some connecting trates even though Xam'd has more of a serius anime its still abought a high school boy with a complcated home life suddenly getting super powers and being thrusted into a battle that before they would never have thought of.
To make money, high school student Shinkurou Kurenai works for the secretive Benika as a "dispute mediator," acting to intervene in the disputes of clients – often violently. One day, Benika gives him a much different assignment: to protect Murasaki Kuhoin, a seven-year-old girl from the wealthy Kuhoin family. This turns out to be a more troublesome task than he expects, as Murasaki is spoiled, naive, and completely unaware of what life is like outside of the luxurious one she had previously. He also has no idea why Murasaki needs his protection, though he is slowly obtaining details from a well-informed classmate. Adding to his problems, Shinkurou still must continue to do his previous work for Benika and take care of his social relationships in school while protecting Murasaki, complicating his entire life. Nonetheless, as time passes, he and Murasaki grow close; however, trouble brews in the shadows as everyone - including Shinkurou - seems to be harboring secrets...
Each of these series have a lot of drama and action while progressing an interesting plot. Furthermore, in each of the series, the male lead has something done to his body and at some point starts to lose himself.
One thousand years after the Giant Warriors caused an apocalyptic event known as the seven days of fire, humans are living in constant fear of the Toxic Jungle. This ever-spreading forest is filled with poisonous plants and gigantic monstrous insects; even the very air is deadly. Nausicaa is the kind and wise princess of a small, peaceful country known as the Valley of the Wind, which has so far avoided the spread of the forest. One night a large airship containing one of the Giant Warriors crashes into the valley. The following day soldiers from the powerful nation of Tolmekia invade the Valley of the Wind to reclaim and revive the warrior. As the only one who truly believes that there is a way for humans to live alongside the insects, Nausicaa must find a way to stop the war that now threatens her people and protect the Toxic Jungle before the Tolmekians burn it to the ground.
The first five minutes of the very first episode of Xam'd gave me an overwhelming Nausicaa vibe, and the feeling really hasn't diminished with successive episodes. I guess the most obvious similarity is that both feature a heroine who flies a single-person light aircraft and grows things in jars and is tough yet deeply compassionate, to the point of defending or weeping over creatures others would think of as monsters. Also, there's lots of airships and goopy stuff and morally complex war stuff and a cute animal. Basically, if you like Nausicaa, be sure to check out Xam'd. If you like Xam'd and you've never seen Nausicaa... have you been living under a rock? It's a classic!
After being separated from him for ten years, Shin Kanzato and his brother Jun have moved to Ayanagi City to live with their older brother Ryou; but little do they know that a rash of mysterious murders have recently plagued the city, leaving the victims’ bodies turned inside out. Soon, Shin finds himself being attacked by a man who is able to summon a mysterious and ghostly creature; and more importantly, he realizes that he possesses the same powers. Now, with the discovery of more people like himself, Shin finds himself drawn further and further into the world of those who use "Persona."
Persona and Xam'd both are about finding who you really are. With the aid of powers that stem from within the characters, both shows fight an evil that wants to exploit the base of the powers. Both animations are beautiful with a few actions sequences during episodes. Highly recommended if you've watched one but not the other.