Let's start this list with this shounen manga called Eden no Ori – Cage of Eden! Our protagonist is Akira Sengoku, a good-for-nothing high school boy whose life drastically changes when he and his classmates are traveling on a plane. Something really bad happens, the plane crashes, and they find themselves on a deserted island. The situation keeps degenerating when desperation brings some of his classmates to kill each other... while some others, keep getting eaten alive. Akira and the other survivors have to struggle in order to survive, but it feels like the real nightmare is only about to begin.

Although Eden no Ori is a shounen manga, while 7 Seeds is a shoujo, these two series share the main theme of a group of people marooned on a deserted island, which is inhabited by dangerous animals. In both these stories, all the characters are forced to cooperate, in order to keep living and find a way out of trouble. What's more, in both Eden no Ori and 7 Seeds we follow the characters' relationships and the way they evolve. If you like 7 Seeds, it's not a stretch to say that Eden no Ori is like a shounen version of it, without a Sci-Fi trait.

Let's go on with this list, but back in time as Boku no Chikyuu wo Mamotte is old but gold! This manga's plot is touching and moving, as it revolves around seven students and their dreams of their previous lives on the moon. As the story goes on, these seven boys and girls grow fond of each other and together discover the truth about the past. It's right in the past that all the answers to face the present and avoided mistakes lie...

Boku no Chikyuu wo Mamotte and 7 Seeds are both shoujo manga, with some Sci-Fi elements and a lot of mystery and drama. Both these stories share the presence of a large group of characters cooperating in order to achieve something, and what's more, they are all well-described and well-developed, even in their interactions with others. Boku no Chikyuu wo Mamotte and 7 Seeds share some narrative techniques, as well; in fact, in both we find flashbacks and different point of view. Both these stories can be very dark and tragic at times, but the final message is one of hope and love. So please give it a try, if you enjoyed 7 Seeds!

Let's go on with another rare gem which is old but gold. Hyouryuu Kyoushitsu is a shounen manga revolving around a hot-tempered sixth grader called Shou Takamatsu. His life as a troublemaker ends when one day, arriving at school, a strange earthquake teleports the entire campus elsewhere. In a deserted land, far away from society, he suddenly faces a life-or-death situation: Shou and his companion will face a food shortage, conflicts among students, external dangers, and so on. Shou needs to find a way to adapt, and that's how his adventure begins...

Although Hyouryuu Kyoushitsu is a shounen manga, it shares with 7 Seeds a post-apocalyptic setting and a group of people who have to face a totally new environment and adapt. Which means, all the characters have to cooperate for the common good, in order to survive. In Hyouryuu Kyoushitsu we find mystery and horror elements like in 7 Seeds, and the characters are well-depicted and grow throughout the story. Hyouryuu Kyoushitsu share with 7 Seeds a dystopian world, and yet in both we can find a beautiful message of hope. We think those who enjoyed 7 Seeds, will enjoy it all the same!

Ibara no Ou is a seinen manga revolving around two twin sisters, Kasumi and Shizuku Ishiki. Born in a world where the Medusa virus has spread, some infected people were chosen to be put into a cryogenic sleep until a cure is found. Sadly, both Kasumi and Shizuku are infected and are one step away from turning to stone. Then, Shizuku is chosen for the cryogenic sleep and when she awakens some years later, she finds herself surrounded by other people, in an unknown and dangerous world. Her journey to find out what happened to her sister and her struggle to survive begin...

Unlike 7 Seeds, Ibara no Ou is a seinen manga, so more cruel approach is to be expected. Aside from this, though, these two series are similar as we find in both a dystopian, post-apocalyptic world where our characters are thrown into, and all of them have to struggle to survive. The characters in both these stories need to adapt in a totally new environment, which is violent, dangerous and, above all, unknown. Even though the main theme differs, we can safely affirm that both Ibara no Ou and 7 Seeds will give you the same vibes, in similar settings. You just need to catch Ibara no Ou up, then!

It's an ordinary day when Satoshi and his friends decide to take a long boat ride all the way to Kijijima. What seems to be just a funny trip with friends, though, is turned upside down, literally. In fact, he and his friends find themselves in a huge Tsunami which overpowers the boat sending all of them to a deserted island. After gathering with all the others, Satoshi decides to take the lead of the situation, in order to save everyone... So his hard life as a castaway begins.

EX: Shounen Hyouryuu may differ from 7 Seeds in the premise, but these two manga share some important similarities. Once again we find characters put in a totally new situation, and a new environment. They all need to adapt to the crisis, and the characters need to work together. Exactly like in 7 Seeds, we can follow the characters' growth and see a ray of hope toward the end. Although EX: Shounen Hyouryuu doesn't wield the Sci-Fi trait like in 7 Seeds does, all in all we can say that these two manga share the same vibes and can make the readers stick to the pages.

Let's end this list with this popular masterpiece! Gantz revolves around a high school boy, Kei Kurono. One day, while going back from school, Kei Kurono and his childhood friend Masaru Katou die under very cruel circumstances. After their death, they wake up in a strange room with other people and only a black ball in the middle of it. That's Gantz, a black ball shouting orders to all those who are dead. They will have to clear missions fighting against the aliens, and only the person who will manage to gain enough scores, will get the chance to go back to life. But if someone should die during a mission, it's over for good.

As you can see by the premises, Gantz and 7 Seeds are different. If you scratch the surface, though, some similarities pop up immediately. In fact, although the missions our characters have to face in Gantz are life-threatening, we find a group of people struggling to adapt in a new environment. Like in 7 Seeds, all the characters are not immediately willing to cooperate. After some arguing, and bickering with each other, though, they will manage to create important bonds. All the characters will learn how helping each other is the only way out, in both Gantz and 7 Seeds. We find two dystopian settings, but on different levels. In fact, Gantz is gore and bloody and it's a seinen, so nothing can be given for granted. If you feel like reading something similar to 7 Seeds, but way stronger... Choose Gantz!