Individuals wielding supernatural powers are the “Kings”, who can choose people for their own clans. Yashiro Isana is a seemingly ordinary boy, but now he is accused of the homicide of a Red Clansman, and the Red King Suou Mikoto is looking for him with all his determination. Yashiro, though, is totally unaware that a video depicting him murder another man has now gone viral. When Kuroh Yatogami saves Yashiro from the Red Clansmen, he finally understands that he needs to prove his innocence if he wants to save his life. In the meanwhile, something bigger is going on in the city...

Although by these premises Planet With and K may seem totally different, they actually share a main concept. In both these shows, there's a boy living a peaceful life, who finds himself involved in something bigger than him, not even wholly understanding the reason why. Not only that, both Souya and Yashiro have no memories about their own past, and struggle to uncover the truth, while supported by two important friends/guides. Both these shows are packed with action, so if you are enjoying Planet With, you'll enjoy K all the same!

Atsushi Nakajima is an orphan who spent his entire life in an orphanage, and then was brutally kicked out. The reason lies in the strange events involving a mystical tiger, and Atsushi is the first suspect. Alone, while starving on a riverbank, Atsushi happens to save Osamu Dazai from drowning. Dazai is a supernatural detective, and their meeting marks Atsushi's life change: he joins the Special Detective Company and his brand-new life begins!

Planet With and Bungou Stray Dogs are both action-packed seinen shows, where a young boy's life drastically changes in just one day. Both Souya and Atsushi have to discover something related to their past, in order to understand their present. If you wish to watch something similar to Planet With, but without the mecha and Sci-Fi traits, give Bungou Stray Dogs a shot!

Gunslinger Stratos is set in the year 2115 A.D., and what once was Japan is now called 17th Far East Imperial City Management District. The promise of a peaceful life, though, is destroyed by “degradation”, which is a disease turning people's bodies to ashes. Tohru Kazasumi is our protagonist, who ends up in a fight between his world and a parallel world, resulting in him having to face his other self from this other world. How will things end up for both of their worlds?

Planet With and Gunslinger Stratos share the same genre, as they both are action anime, with Sci-Fi elements. In both of these shows, there's a boy whose life takes a turn for the worse in just one day, and he finds himself having to fight, when mankind is threatened. Even lacking the mecha trait, Gunslinger Stratos is somewhat a more dramatic version of Planet With. Give it a try, if you're loving Planet With!

One of the members of the Boy Detectives' Club, created by Kogorou Akechi, is Kensuke Hanasaki. One day, this high school boy meets by chance Yoshio Kobayashi, a strange boy with an amnesia. Even though he wishes to die, Kobayashi is unable to. Then, Hanasaki offers him a deal: if Kobayashi joins the Club, helping them with his strange ability, Hanasaki will eventually help him die. That is how their friendship, rivalry, and partnership begins, while Twenty Faces – Akechi's enemy – is plotting something...

With Trickster, we're once again dealing with a show involving teenagers. Both Planet With and Trickster are Sci-Fi shows, in which teenagers get involved in something bigger than them. Like Souya, Kobayashi has no memories about his past, and the new adventure with Hanasaki will help him regain them. If you want to watch something similar to Planet With, with more mysteries and drama, pick Trickster!

Hellsalem's Lot – previously known as New York – was destroyed when Beyond collided with the Earth. In Beyond, strange, supernatural creatures live, and years later, they finally manage to coexist with humans. Leonardo Watch is a kind boy who received the power called “The Eyes of God”. He moved to Hellsalem's Lot in order to find out the truth about his power, but when he joins the Libra association his life is literally turned upside down...

Even with different plots, Planet With and Kekkai Sensen are action shows, revolving around the main concept of the research: both our protagonist are looking for something, while Souya is looking for the reasons why he has to fight the 7 heroes, Leonardo is looking for the reasons why he is gifted with “The Eyes of God”. Both our protagonists are backed up by strange creatures: Souya has a cat-like sensei, while Leonardo has a vampire. All in all, these two shows are equally enjoyable, so if you like the main themes of one, you're bound to enjoy the other all the same.

Teito Klein is an orphan, and a slave. He attends the elite Barsburg Academy, where he lives like a reject. If things could be worse, Teito has no memories of his past, and Mikage Celestine is his only friend: he managed to befriend Teito in spite his bad attitude. Teito's life is turned upside down when the truth about the Empire and the Seven Ghosts is unveiled: he has to run away from the academy, and while on the run he meets a priest – Frau – who helps him... but danger is still around the corner.

Planet With and 07-Ghost revolve around two boys who have lost their memories, and consequently, they don't really know where to look for answers. Both Souya and Teito are thrown in a new adventure where they have to use their abilities in order to fight back against the enemy. While Souya fights with his robot, Teito fights with the Zaiphons – a supernatural force. And if Souya has to deal with 7 heroes, Teito has to deal with 7 priests – the so-called 07-Ghosts – who help him, though. If you like Planet With because of its fights, you'll find the same good actions in 07-Ghost! You can consider 07-Ghost like the more serious, and josei version of Planet With, without mecha.