Anime Like Why Does Nobody Remember Me in This World?

During a great war where five rival races battled for supremacy, humanity emerged victorious thanks to the hero, Sid. However, during a time of unprecedented peace after the war, the world got re-written right before the eyes of Kai Vento.

Kai’s peaceful world is upended and he is thrown into a new reality where the hero Sid never existed and humans are on the brink of extinction.

After encountering a mysterious girl named Rinne, Kai helps the remnants of humanity rise up with Sid’s powerful sword to defeat the enemy races that now dominate the world.

For years, war has raged between the Empire and the realm of witches, Nebulis.

On the battlefield, a talented young knight is tasked with killing the princess of Nebulis, but he is taken by her beauty and she taken by his honor.

Despite their two nations at war, they find themselves continually drawn to each other, discovering they share similar ideals of peace.

Ever since they met mysteriously as children, Satou has has a crush on his childhood friend and neighbor, Hime. After mysteriously appearing with her grandfather 10 years ago, he learns that Hime is moving away.

Mustering up all of his nerve to confess his feelings before she leaves, he discovers that “moving away” means going back to the fantasy world she came from in the first place to get married to a fiancee she never met.

Not giving it a second thought, Satou follows her through the portal, confesses his feelings, and marries her instead of the fiancee that her kingdom chose for her.

Now, not only does Satou have a beautiful new wife, but he discoveres that she is the bearer of one of five powerful rings that the Ring King will don to fight the Abyss King that threatens the world. However, the new Ring King Satou must now obtain these rings by marrying four other women.

Once a dark lord that trampled over humanity, Leonis is awoken from his thousand-year stasis by Riselia, a girl exploring the ruins where he was entombed with her maid.

When the three of them are attacked by beings plaguing humanity in this new age named Voids, Leonis decides to enroll in the Excalibur Academy to train with the future Holy Knights that he once fought against. Between his body only being that of a ten-year-old and the world having greatly changed from what he knew in the past, Leonis is determined to figure out what is going on in this new age as well as why these Voids seem to have some connection to him.

After a mysterious virus killed every human over 13 years old, the vampires rose up with a promise to protect the survivors. The only thing they asked in return is donations of blood.

For Yuuichirou and Mikaela, they have grown tired of being livestock and pose a daring escape plan. It ultimately fails with only Yuuichirou left alive. However, after joining up with a mercenary company, he swears vengeance on the vampires, no matter the cost.

It has been five hundred years since humanity went extinct at the hands of the mysterious beasts that roam the land. Now the surviving races have retreated to floating islands in the sky out of reach of most of the beasts. However, there are ones nimble enough to put these people in danger.

A small group of young girls, a race called the Leprechauns, are now raised as the only ones that can wield ancient weapons to fend off invasion by the beasts, but it often requires them to sacrifice themselves and they don’t often live to see adulthood.

Enter Willem, the last surviving human woken from his slumber and sent to watch over these girls, still feeling the sting from the final battle where he lost everything five hundred years ago.

Humans live in constant fear of dragon attack, the species that really rules the world with overwhelming power. To keep human populations safe, a number of hunters track and kill dragons as their job. Ragna was one such dragon hunter, though as weak as he is, he is often carried by the prodigal talent of his companion, Leonica.

One day, Ragna gains an influx of power that came from his fallen future self. He learns that after Leonica’s brutal death in the future, Ragna’s future self labored for years hunting dragons in revenge, losing comrade after comrade and building his strength ever higher.

While his new body struggles to hold all the power he gained, his future self tells him that the key to finally killing all dragons, including the Dragon God, lies in him finding Crimson, a Dragon Lord who also seeks to end their entire species.

In a rickety old building in Akihabara, mad scientist Rintarou Okabe and his lab assistants work on so-called future gadgets.

However, their most successful contraption to date, the Phone Microwave, a machine that can turn bananas into gel, also has the added function of sending emails into the past, thus altering the flow of history.

In the future, a violent battle is taking place between the La’cryma, protectors of humanity, and the Shangri-La, a dimension bent on the destruction of everything. A group known as the Dragon Cavalry is dispatched in order to look for a powerful weapon call the Dragon’s Torque.

In the present, Haruka and her friend Yuu are considering running away when they encounter a member of the Dragon’s Cavalry, who believes that Haruka possesses the Dragon’s Torque.