Here, are the list of best parallel world shows as below: 画江湖之换世门生, 乌云遇皎月, 더 킹 : 영원의 군주, 賢者の孫, 異世界かるてっと, 盾の勇者の成り上がり, 転生したらスライムだった件, かくりよの宿飯, 刻刻, Counterpart, 異世界はスマートフォンとともに。, 终极三国2017, 幼女戦記, Au-delà des murs, 더블유, Stranger Things, Re：ゼロから始める異世界生活, この素晴らしい世界に祝福を！, Tripped, ゲート 自衛隊 彼の地にて、斯く戦えり, 血界戦線, 神々の悪戯, ノーゲーム･ノーライフ, Nowhere Boys, アラタカンガタリ 〜革神語〜, アムネシア, Ben 10: Omniverse, ブラック★ロックシューター, The Sparticle Mystery, 夢喰いメリー, .
The story took place in two parallel universes named Yuan and Yi, where people shared the same life and death. Nian Yangxiao, came from the Yuan World to save his true love Kong Linghui, crossed the border to the Yi World in search of the killer who assassinated his love. In the Yi World, however, he and Kong Linghui were enemies. Kong Linghui tried everything to kill him. At the same time, the mysterious girl Yong'er, the romantic street gangster, the cold-faced police officer Nuo Dun and others appeared one after another, each accompanied with a complex case. The involvement of Nian Yangxiao made the cases more complicated and confusing. A suspenseful, thrilling, blood-burning and fantastic adventure in different time and space was launched in "A Portrait of Jianghu: Double Life".
Wu Yu is a math major while Tan Jiao writes mystery novels for a living. The two fall in love on a cruise ship yet end their trip afflicted with varying degrees of memory loss. Wu Yu and Tan Jiao were swept into a whirlwind romance after meeting each other on a cruise ship. However, they both experience some form of memory loss afterwards. Wu Yu has no recollection about the few days after his trip while Tan Jiao lost nearly a year and a half's worth of memories. Wu Yu is a mathematical prodigy and a straight-A student with a bright future. His life changes drastically when his mother and a younger sister who are his only two relatives are suddenly killed. In order to find the real murderer, he works as a car mechanic and crosses paths with Tan Jiao once more.
When a gateway opens to a parallel universe in modern-day Korea, a king must step into another world in search of answers to a long-unanswered mystery.
OTT Platforms for 더 킹 : 영원의 군주 are Netflix, wavve, and Watcha
In the modern world, a lonely man dies and reincarnates in another world. Rescued as a baby from a tragedy by a brilliant sage named Merlin, the baby is raised as “Shin Walford,” and undergoes training in both magic and martial arts to kill the monsters that ravage the land. At 15 years old, Shin has become shockingly powerful. But his grandfather Merlin has forgotten to teach him the common sense of this world. As a result, Shin enrolls in the kingdom's Magic Academy to hone his skills and mature among other teenagers. However, living a normal life is impossible, as he is established as a local celebrity almost as soon as he arrives. This story follows Shin Walford's high school life in the capital as he makes new friends, learns about the world, and fights off the various forces of evil surrounding him and his city.
OTT Platforms for 賢者の孫 are U-NEXT
A mysterious switch appeared one day. Upon pressing it, they were sent to a different alternative world!! There are also characters from other alternative worlds gathered together...!?
OTT Platforms for 異世界かるてっと are Amazon Prime Video
Iwatani Naofumi, a run-of-the-mill otaku, finds a book in the library that summons him to another world. He is tasked with joining the sword, spear, and bow as one of the Four Cardinal Heroes and fighting the Waves of Catastrophe as the Shield Hero. Excited by the prospect of a grand adventure, Naofumi sets off with his party. However, merely a few days later, he is betrayed and loses all his money, dignity, and respect. Unable to trust anyone anymore, he employs a slave named Raphtalia and takes on the Waves and the world. But will he really find a way to overturn this desperate situation?
OTT Platforms for 盾の勇者の成り上がり are Netflix, Hulu, Disney Plus, U-NEXT, Amazon Prime Video, and Netflix basic with Ads
37-year-old corporate worker Mikami Satoru is stabbed by a random killer, and is reborn to an alternate world. But he turns out to be reborn a slime! Thrown into this new world with the name Rimuru Tempest, he begins his quest to create a world that’s welcoming to all races. Broken free from ordinary, stale past life, his fresh adventure in a fantasy world as a slime monster with unique abilities begins.
OTT Platforms for 転生したらスライムだった件 are Netflix, Disney Plus, Amazon Prime Video, and U-NEXT Amazon Video.
After losing her grandfather, Aoi—a girl who can see spirits known as ayakashi—is suddenly approached by an ogre. Demanding she pay her grandfather’s debt, he makes a huge request: her hand in marriage! Refusing this absurd offer, Aoi decides to work at the Tenjin-ya bed and breakfast for the ayakashi to pay back what her family owes.
OTT Platforms for かくりよの宿飯 are U-NEXT
In order to save her brother and nephew who have been kidnapped by a mysterious religious group known as the Genuine Love Society, Juri and her family cast a spell using a stone hidden by her grandfather to enter the world of stopped time known as Stasis. However, when they infiltrate the kidnapper's base, they're met by other people who can also move about freely. With grotesque creatures lurking about, will they be able to escape the parallel world and return to their normal lives?!
OTT Platforms for 刻刻 are Netflix, U-NEXT, and Amazon Prime Video
Howard Silk is a lowly cog in a bureaucratic UN agency who is turning the last corner of a life filled with regret when he discovers the agency he works for is guarding a secret: a crossing to a parallel dimension.
OTT Platforms for Counterpart are Amazon Prime Video Apple iTunes, Google Play Movies, Amazon Video, Vudu, and Redbox.
Touya Mochizuki was accidentally killed, and as an apology, God allows him to be reborn in a fantasy world and will grant him any one wish he desires. And so, Touya chooses to keep his smartphone in the next world. In his second chance at life, he befriends many important figures and comes across the world's secret. He inherits the legacy of an ancient civilization and travels around nonchalantly while possessing powers that rival this world's kings.
OTT Platforms for 異世界はスマートフォンとともに。 are Netflix
While testing out the interdimensional traveling gear, the representatives from KO One accidentally repeated the same mistake their predecessor made: They crushed Liu Bei with a boulder. In order to maintain silver dimension's timeline, Zhi Ge assumed the identity of his doppelganger Liu Bei and completed the sworn brotherhood ceremony with Guan Yu and Zhang Fei. As he awaits for Liu Bei's recovery, Zhi Ge must learn the ins/outs of Silver dimension while avoid being exposed as a fake.
On the front lines of the war, Tanya Degurechaff, blond hair, blue eyes, and porcelain white skin, commands her squad with lisping voice. Actually, she is one of Japan's most elite salary men, reborn as a little girl into a world of magical warfare after angering a mysterious being who calls himself God.
OTT Platforms for 幼女戦記 are Netflix, Hulu, Disney Plus, U-NEXT, and Netflix basic with Ads
Lisa, a young speech therapist, heirs a house from an unknown man who died over 20 years ago. She is not in any way related to this man and she doesn't know him. When she moves into the mysterious building, she becomes trapped in a true labyrinth...
OTT Platforms for Au-delà des murs are SALTO Apple iTunes.
W, a webtoon, is written and drawn by Yeon-joo's father and follows rich boy vigilante Chul as he attempts to find the culprit who murdered his family one fateful night. Despite the webtoon's popularity, Yeon-joo's father, Seong-moo, plans to abruptly end it by having Chul killed off.
OTT Platforms for 더블유 are wavve Naver Store.
When a young boy vanishes, a small town uncovers a mystery involving secret experiments, terrifying supernatural forces, and one strange little girl.
OTT Platforms for Stranger Things are Netflix, Netflix basic with Ads
Natsuki Subaru, an ordinary high school student, is on his way home from the convenience store when he finds himself transported to another world. As he's lost and confused in a new world where he doesn't even know left from right, the only person to reach out to him was a beautiful girl with silver hair. Determined to repay her somehow for saving him from his own despair, Subaru agrees to help the girl find something she's looking for.
OTT Platforms for Re：ゼロから始める異世界生活 are Amazon Prime Video, Disney Plus, and U-NEXT
After a traffic accident, Kazuma Sato’s disappointingly brief life was supposed to be over, but he wakes up to see a beautiful girl before him. She claims to be a goddess, Aqua, and asks if he would like to go to another world and bring only one thing with him. Kazuma decides to bring the goddess herself, and they are transported to a fantasy world filled with adventure, ruled by a demon king. Now Kazuma only wants to live in peace, but Aqua wants to solve many of this world’s problems, and the demon king will only turn a blind eye for so long…
OTT Platforms for この素晴らしい世界に祝福を！ are Netflix, U-NEXT
Danny is an average 24-year-old who has been friends with stoner Milo since they were kids. But then Danny decides it’s time to grow up, settle down and marry long-term girlfriend Kate, whereas Milo continues to focus on getting high. One night Milo takes a particularly strong batch of hallucinogens, and Danny appears in his living room - except the real Danny’s at his engagement party, and the real Danny doesn’t normally carry a sword! This Danny claims to come from another dimension, and he brings a warning - the only problem is that Milo’s too wrecked to remember what it is...
OTT Platforms for Tripped are All 4 Amazon Video.
Off-duty Japan Self-Defense Forces (JSDF) officer and otaku, Youji Itami, is on his way to attend a doujin convention in Ginza, Tokyo when a mysterious portal in the shape of a large gate suddenly appears. From this gate, supernatural creatures and warriors clad in medieval armor emerge, charging through the city, killing and destroying everything in their path. With swift actions, Youji saves as many lives as he can while the rest of the JSDF direct their efforts towards stopping the invasion. Three months after the attack, Youji has been tasked with leading a special recon team, as part of a JSDF task force, that will be sent to the world beyond the gate—now being referred to as the "Special Region." They must travel into this unknown world in order to learn more about what they are dealing with and attempt to befriend the locals in hopes of creating peaceful ties with the ruling empire.
OTT Platforms for ゲート 自衛隊 彼の地にて、斯く戦えり are Netflix, U-NEXT
One day, New York City as we know it vanished overnight into a mysterious fog. Now known as Hellsalem's Lot, it has become a place where another world beyond imagining is connected to our reality. The balance within this new world is protected by a secret society known as Libra. Leo, a journalist and photographer who arrives in the city, is unexpectedly recruited to join their ranks.
OTT Platforms for 血界戦線 are Netflix, U-NEXT
Yui Kusanagi is ordered by Zeus, a god and the headmaster of a school he created, to teach the meaning of love to young and handsome gods. The reason he has for doing this is to cancel the negative effects of the weakening bond between the world of the divine and the world of the humans.
OTT Platforms for 神々の悪戯 are U-NEXT
This is a surreal comedy that follows Sora and Shiro, shut-in NEET siblings and the online gamer duo behind the legendary username "Kuuhaku." They view the real world as just another lousy game; however, a strange e-mail challenging them to a chess match changes everything—the brother and sister are plunged into an otherworldly realm where they meet Tet, the God of Games. The mysterious god welcomes the two to Disboard, a world where all forms of conflict are settled through high-stake games. This system works thanks to a fundamental rule wherein each party must wager something they deem to be of equal value to the other party's wager. In this strange land where the very idea of humanity is reduced to child’s play, the indifferent genius gamer duo of Sora and Shiro have finally found a real reason to keep playing games: to unite the sixteen races of Disboard, defeat Tet, and become the gods of this new, gaming-is-everything world.
OTT Platforms for ノーゲーム･ノーライフ are Netflix
Four teenage boys get lost in the forest and discover, when they return home, that they are in an alternate world identical to theirs except for one startling difference - they were never born.
OTT Platforms for Nowhere Boys are Netflix, Stan Apple iTunes, Google Play Movies.
Every 30 years, a new princess is chosen from the Hime family to serve the Hayagami. The time has come again, but over these past years, records state not a single female has been born, save for one, the 15 year old Arata. The only problem is, Arata is actually a male! Forced to disguise himself and take the place of the princess candidate until a formal one can be found, he attends the festival only to witness the current princess, Kokuri-hime, murdered, and his own life is forfeit as well, by the hands of the princess' personal guard, the 12 Shinshou. As he runs for his life, Kannagi of the 12 convinces everyone that Arata is the one who has murdered the princess instead, and now everyone in the Imperial Court is after his head!
This story takes place in a fictional town, in a fictional country, in a fictional world. One morning, a young lady awakens to find that she has lost all her memories prior to that morning. Her life, her relationships, her very name—all gone. All that's left is a cell phone with numbers and names she doesn't recognize and Orion, a young boy that only she appears to be able to see. With Orion's guidance, she struggles to make sense of herself, a boyfriend she doesn't know and the thousand and one little things that make up a daily life. But with no memories left, the only alternative is to forge new ones, even if that means leaving old loves behind.
OTT Platforms for アムネシア are U-NEXT
A year after the events that took place during the "Final Battle" and after the destruction of Omnitrix, 16-year-old Ben Tennyson has to face new enemies.
OTT Platforms for Ben 10: Omniverse are Hulu, HBO Max, DIRECTV, Sling TV, and Spectrum On Demand Apple iTunes, Google Play Movies, Amazon Video, and Microsoft Store.
On the first day of junior high school, Mato Kuroi happens to run into Yomi Takanashi, a shy, withdrawn girl whom she immediately takes an interest in. Mato tries her best to make conversation with Yomi, wanting to befriend her. At first, she is avoided, but the ice breaks when Yomi happens to notice a decorative blue bird attached to Mato's phone, which is from the book "Li'l Birds At Play." Discovering they have a common interest, the two form a strong friendship. In an alternate universe, the young girls exist as parallel beings, Mato as Black★Rock Shooter, and Yomi as Dead Master. Somehow, what happens in one world seems to have an effect on the other, and unaware of this fact, the girls unknowingly become entangled by the threads of fate.
An experiment gone wrong causes everyone over the age of 15 to disappear from planet Earth.
OTT Platforms for The Sparticle Mystery are Virgin TV Go Amazon Video.
Yumeji has the ability to see the dreams of other people around him. When Yumeji meets Nightmare Merry, a dream demon seeking to return to her own world he uses his power to assist her.