[Kamen Rider Gavv x Reverse Isekai Mega Man Crossover!] After the fall of Stomach Family, many of Granute's family are exiled their relatives after seeing them eat the Dark Snacks previously as the Granute become despair. Until the group of lost Granute meet the Time Jacker to chosen them to become their army and revive the Stomach Family, as they join the Neo Stomach Inc with the revive Stomach Family. The Time Jacker found the world of Robot Masters to merged with someone else's world into one. Kaguya notice this and decide to find the successor of Gavv to stop them. Follow the story of the new gen Kamen Rider Gavv and Mega Man who will make humans co-exist with Granute and Robot Masters while prevent the Dark Snacks happen.

[Kamen Rider Saber x Stella Sora Crossover!] Years after Kamen Rider Saber defeat Meggido, the world is peaceful again. However Time Jacker steal Wonder Ride book and Seiken to scatter them around new world, Touma is worry and meet Sougo Tokiwa who explain that he need to find the successor. He agreed as they go to Prime Earth to meet the successor of swordsman. They find young man who was a novelist writer, and tell the young man to save the world of Stella Sora from the Meggido. He accept it as he go to the world of Stella Sora as Tyrant of the world and the Swordsman of new world. He will meet many people and fight new enemy, can he save the world from the destruction?

Just when we thought these enemies had been destroyed, a new evil group rises from their ashes. Dai Shocker, their plan, is to use an ancient artifact to merge several worlds into one and rule it. But two young boys have been chosen to become a new generation of heroes to defeat Dai Shocker, they are........the legendart kamen riders! All images and videos belong to their respective owners.

Biobook for variants of Kamen Riders.

[Kamen Rider x Reverse Isekai My Hero Academia Crossover!] Years after Kamen Rider Ichigo and Nigo defeat Shocker every time. The Shocker give up to defeat Kamen Rider and give up to destroy the Kamen Riders. They research the multiverse and find a world doesn't have Kamen Riders, they don't need a lot of Monsters so they will start from over and decide to merged two worlds into one because Kamen Rider defeat them. A young man who is a huge fan of golden age era Kamen Rider who wear a toy mask that he stop the a group of gangsters harrassing innocent people. He was kidnapped by Shocker and convert him into a cyborg, then Takeshi Hongo help him to escape. And he learn the world of MHA is merged with his world into one. He will learn how to be a Kamen Rider to protect his world!

[Kamen Rider Agito x Reverse Isekai RWBY Crossover!] Years after Kamen Rider Agito defeat Overlord, the world is peaceful again. Hikaru Shindo haven't overcome of his first love passed away, and he was trying to move on. He fufil his girlfriend's promise to watch his favorite Kamen Rider series, Agito, and her Anime Series, RWBY Ice queendom. He watch the first episode before gazing at the star. He see a shooting star and ask the star to grant RWBY transport to Earth as an joke. Later he meet Team RWBY on his bedroom, the Lord is attack the humans as Hikaru tried to protect Ruby but he awaken the seed inside him. He become the next Agito as he learn his powers is chosen to protect the Earth from Lords, Grimm, and other criminals.

When the ancient civilization, Gurongi Tribe, are resurrected, a multi-talented young man named Ikurou Haraguchi, finds himself drawn to the mysterious stoned belt that was found within the excavated cave temple as the Gurongi continues their ruthless game on the descendants of the Rinto, humanity itself. Then, he became Kamen Rider Kuuga to help the police fight the Gurongi. Not only that, the Gurongi Tribesmen may be trying to take over Japan, but they roam in other countries as well. Ikurou would have a fateful encounter with certain ninjas as they heard that the Gurongi are hunting humans down to kill, especially Kuuga. This made Ikurou and his allies to travel around the world by their mission. However, when Ikurou heard that the new Dead Or Alive Tournament is announced, he decides to participate in order to find something that seems off behind the scenes. It is up to Ikurou along with the assembled police and ninjas, to use the various powers of Kuuga to stop and defeat the Gurongi Tribesmen, while also being the part of the tournament and ensure the happiness of others.

Kamen rider zeztz X Zenless Zone Zero

[Kamen Rider Kuuga x DC Universe Crossover!] Years after Kamen Rider Kuuga save the worlds from the Gurogi, the world is peaceful again. A young man wake up in the Metropolis city and doesn't know how he did end up here but he remember he was going to the convention to buy the belt and going back to his home. He see a belt on his waist as reveal it was the Arcle, he was check the city then suddenly the supervillain attack the city and the young man save the people before Superman came in to stop the villain. However the young man feel different as he transform into Kamen Rider Kuuga. He will rising up to become the hero and help Superman, Batman, and other DC Heroes against the villain as he is the next Kamen Rider Kuuga. CHOU HENSHIN!

[Kamen Rider Fourze X Blue Archive Crossover!] Hiroto Kobayashi is the legendary Delinquent called "The Red Demon", a famous Delinquent who stands for the right thing and beat up some bad guys, after a cram school event because of a scam, the police let him go and meet Misaki who was a Legendary Delinquent. Later they both meet Tsukasa Kadoya and together they both send to the world of Blue Archive. Now the Zodiart is back but also the school having a war against some bad students, it's time for the Space Teacher protect Kivotos City from Zodiarts. UCHU... KITAAAAAA!!!!