If you liked the Shadow Star Narutaru anime, the Anime-Planet community thinks you'd like:
Middle school student Ganta Igarashi witnessed the slaughter of his entire class by the mysterious 'Red Man', and as the only survivor, he was labeled a mass murderer and sentenced to death. Now an inmate at the privately-owned prison and ‘amusement park' known as Deadman Wonderland, Ganta must try to survive in a place where inmates are the main attraction in brutal gladiator-style games. At the same time, he must attempt to uncover the truth behind the ‘Red Man', his mysterious childhood friend Shiro, and why he was the only survivor that bloody day.
Both Deadman Wonderland and Shadow Star Narutaru focus on what happens when people receive supernatural powers they should never have received, and what happens when people try to exploit each other utilizing these powers. Told through the perspective of coming-to-age, Deadman Wonderland and Shadow Star Narutaru explore how adolescents must struggle in a world where adults left them behind.
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.
Both anime portrays how power changes people,but they leave out how the power is achieved to focus on the consequences, or to be more precise how it brings out their true nature. Gantz focuses on the individual where as Narutaru focuses on social aspects. But in both anime we witness our ugly side very graphically.
It is said that humans fear what is different, and that such fears drive much of human behavior. Naoto and Nayao learned the brutal truth of this statement when they see the looks on their parents’ faces, the day they were sent to an isolated laboratory to live out their youth. Their crime? Possessing inherent psychic abilities. Yet now, the brothers have escaped and are at last free to experience the world, but they soon discover that their prison was also their protection from the outside world. The question is, are their powers more dangerous to themselves, or those around them?
Both Night Head Genesis and Shadow Star Narutaru explore what happens when people are suddenly granted great powers and how these powers always seem to bring out the worst side of humanity. While Shadow Star Narutaru is initially a bright story, do not let it fool you as it will quickly turn into a world filled with human suffering, similar to the one explored in Night Head Genesis. Ultimately, great powers always require great responsibility, and Night Head Genesis and Shadow Star Narutaru shows what happens when people forsake these responsbilities.
On the day before summer vacation, Ichika discovered an old mirror in an old school building. From within it, the mysterious Manatsu looked out and offered to trade favors: if Ichika will do her "homework" (experience the power of the spiritual life forces and write about her feelings) then she will return the charm that Ichika has lost. As Ichika struggles to absorb the raw power of nature, those who watch from the other side of the mirror eagerly await her decision at the end of trials. Can a 14 year old take on the sins of the world and mend the rifts between nature and humanity?
Both anime start like a light series, which will trick you into thinking you are watching some easy slice-of-life stuff, and after a few episodes they will get progressively darker. Narutaru's darkness consists mainly of mentally-scarring physical violence, while Uta Kata will 'delight' you with horrors in a more psychological way. The main similarity is that you will not sleep very well the night you finish watching one of these 2.