If you're looking for similar to Casshern Sins, you might like these titles. All recommendations are made by Anime-Planet users like you!
Earth is under attack from the alien invaders known as the Radam and is quickly losing the battle. With the planet’s finest defense, the space ring, being overrun without much opposition, mankind’s fate seems bleak. One of the few forces left to oppose the Radam are the Space Knights; but they are anything but successful. That is, until a mysterious man named Blade falls from the sky. Blade has the power to transform into a Tekkaman, one of the deadliest fighting forces in the universe – the very force that is leading the Radam onward! But unlike the other Tekkamen, Blade is obsessed with just one goal: defeating the Radam. Having lost his memory, he doesn't know why, but he knows he must stop them. With the help of the Space Knights he can begin uncovering his past, discovering who the Radam and the Tekkamen are, and of course, save Earth in the process!
Lots of similarities between these two. Main characters Takaya "D-Boy" (Blade) and Casshern aren't exactly normal humans and both are very indifferent to their surroundings, but develop and change a lot. They're very powerful delivering fast paced and over the top action. Both shows heavily emphasize strong rivalries with villians that are very similar to the main characters, with Blade vs Evil, and Casshern vs Dio. Both shows feature gritty, grimdark, and post-apocalyptic settings with similar pacing. To top it all off, they share the same composer Kaoru Wada, his music in both is very similar and incredible. Fun note: Seiyuu Toshiyuki Morikawa (whom supposedly broke two mics with his voice during Tekkaman Blade) = Blade and Dio.
Kanata Sorami, a young Private in the army, arrives in Seize to serve in the Clocktower Fortress and learn the trumpet under the tutelage of Master Sergeant Rio Kazumiya. Though peace hangs uneasily over the world, Kanata finds a relaxing routine of laundry, shopping, and trumpet practice greets her at her new post instead of brutal drilling and discipline. With help from the other members of the all-female 1121st Platoon, Kanata finds her place in the bustling city, bringing joy and humor to the war-weary residents while learning a great deal about the world.
In the 6th year of the Kan'ei era, people enjoy a time of peace; skilled swordsmen are revered and respected, and their lives are their own. Amidst the tranquility, Lord Tokugawa Tadanaka decides, for his own amusement, to hold a fighting tournament in which real swords are used - though laws forbid their use. In a match to the death two highly-skilled swordsmen face off: the one-armed Fujiki Gennosuke, and the blind Iraki Seigen. As they take their respective stances, flashbacks paint a picture of the duo’s past and battle wounds; and thus, the real story begins...
One thousand years from now, humanity live pastoral lives aided by psychokinetic powers and the subservient Monster Rats. Saki Watanabe has just come of age, and her power has been reined in through meditation and hypnosis. She joins the Unified Class, where she will learn about her power and the world around her; yet so much of the truth is kept hidden. Her friends Shun, Mamoru, Satoru, and Maria share in her curiosity, and decide to go out of their way to seek the truth. But will the secrets of the past and present turn out to be things that Saki really wants to know?